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100-664: The Sphere (officially Große Kugelkaryatide N.Y. , also known as Sphere at Plaza Fountain , WTC Sphere or Koenig Sphere ) is a monumental cast bronze sculpture by German artist Fritz Koenig (1924–2017). The world's largest bronze sculpture of modern times stood between the Twin Towers on the Austin J. Tobin Plaza of the World Trade Center in New York City from 1972 until

200-475: A patina , a process that allows some control over the colour and finish. Another form of sculptural art that uses bronze is ormolu , a finely cast soft bronze that is gilded (coated with gold) to produce a matte gold finish. Ormolu was popularized in the 18th century in France and is found in such forms as wall sconces (wall-mounted candle holders), inkstands, clocks and garnitures . Ormolu wares can be identified by

300-468: A clear ring when tapped, showing that they are made of bronze, not a cheaper alloy such as spelter or pewter . September 11 attacks The September 11 attacks , commonly known as 9/11 , were four coordinated Islamist terrorist suicide attacks carried out by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into

400-785: A commercial pilot's license. Hanjour arrived in San Diego on December 8, 2000, joining Hazmi. They soon left for Arizona, where Hanjour took refresher training. Marwan al-Shehhi arrived at the end of May 2000, while Atta arrived on June 3, 2000, and Jarrah arrived on June 27, 2000. Bin al-Shibh applied several times for a visa to the United States, but as a Yemeni, he was rejected out of concerns he would overstay his visa. Bin al-Shibh stayed in Hamburg, providing coordination between Atta and Mohammed. The three Hamburg cell members all took pilot training in South Florida at Huffman Aviation . In

500-440: A diameter of 82 feet (25 m), the sphere rotated once around its axis within 15 minutes. One hundred and sixty gallons of water (600 liters) per second flowed out of the nozzles of the associated Plaza Fountain. The well water was sprayed in a ring running around the sphere onto a flat surface adjacent to the sphere. This should give the impression that the spherical caryatid rises out of the water. The highly complex technology of

600-565: A few days after the September 11 attacks and its subsequent conversion to a memorial. In it, Koenig recalls The Sphere 's origin and talks about transience and the transformation of art following the attacks. A limited edition of the book THE SPHERE – Vom Kunstwerk zum Mahnmal / THE SPHERE – From Artwork to Memorial was published in June 2021, the 50th anniversary of the sculpture's installation. Bronze sculpture Common bronze alloys have

700-555: A few theories that 9/11 was selected by the hijackers as the date of the attack because it resembled 9-1-1 , the phone number used to report emergencies in the United States. However, Lawrence Wright wrote that the hijackers chose the date when John III Sobieski , the King of Poland and Grand Duke of Lithuania , began the battle that turned back the Ottoman Empire 's Muslim armies that were attempting to capture Vienna in 1683. Vienna

800-558: A group of men from Hamburg , Germany, arrived in Afghanistan. The group included Mohamed Atta , Marwan al-Shehhi , Ziad Jarrah , and Ramzi bin al-Shibh. Bin Laden selected these men because they were educated, could speak English, and had experience living in the West. New recruits were routinely screened for special skills and al-Qaeda leaders consequently discovered that Hani Hanjour already had

900-586: A matter for the FBI". By late June, senior counter-terrorism official Richard Clarke and CIA director George Tenet were "convinced that a major series of attacks was about to come", although the CIA believed the attacks would likely occur in Saudi Arabia or Israel. In early July, Clarke put domestic agencies on "full alert", telling them, "Something spectacular is going to happen here, and it's going to happen soon". He asked

1000-406: A number of mechanical applications. Historical bronzes are highly variable in composition, as most metalworkers probably used whatever scrap was on hand; the metal of the 12th-century English Gloucester Candlestick is bronze containing a mixture of copper, zinc, tin, lead, nickel, iron, antimony, arsenic with an unusually large amount of silver – between 22.5% in the base and 5.76% in

1100-465: A period of transition, having just relocated back to Afghanistan from Sudan . The 1998 African embassy bombings and bin Laden's February 1998 fatwā marked a turning point of al-Qaeda's terrorist operation, as bin Laden became intent on attacking the United States. In late 1998 or early 1999, bin Laden approved Mohammed to go forward with organizing the plot. Atef provided operational support, including target selections and helping arrange travel for

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1200-431: A plaster is a means of preserving the artwork until a patron may be found to finance a bronze casting, either from the original moulds or from a new mould made from the refined plaster positive. Once a production mould is obtained, a wax (hollow for larger sculptures) is then cast from the mould. For a hollow sculpture, a core is then cast into the void, and is retained in its proper location (after wax melting) by pins of

1300-585: A religion that will prevent it from destroying all people. So we tell the Americans as people and we tell the mothers of soldiers and American mothers in general that if they value their lives and the lives of their children, to find a nationalistic government that will look after their interests and not the interests of the Jews . The continuation of tyranny will bring the fight to America, as [the 1993 World Trade Center bomber] Ramzi [Yousef] yourself and others did. This

1400-439: A statement by him on September 16, 2001: "I stress that I have not carried out this act, which appears to have been carried out by individuals with their own motivation". In November 2001, U.S. forces recovered a videotape in which bin Laden, talking to Khaled al-Harbi , admitted foreknowledge of the attacks. On December 27, 2001, a second video of bin Laden was released in which he, stopping short of admitting responsibility for

1500-470: A telephone call mentioning the meeting, Mihdhar, and the name "Nawaf" (Hazmi); while the agency feared "Something nefarious might be afoot", it took no further action. The CIA had already been alerted by Saudi intelligence about Mihdhar and Hazmi being Al-Qaeda members. A CIA team broke into Mihdhar's Dubai hotel room and discovered that Mihdhar had a U.S. visa. While Alec Station alerted intelligence agencies worldwide, it did not share this information with

1600-555: Is also applied to metal sculptures made by electrotyping (or galvanoplasty), although these sculptures are typically pure copper and their fabrication does not involve metal casting. In lost-wax or investment casting, the artist starts with a full-sized model of the sculpture, most often a non-drying oil-based clay such as Plasticine model for smaller sculptures or for sculptures to be developed over an extended period (water-based clays must be protected from drying), and water-based clay for larger sculptures or for sculptures for which it

1700-406: Is desired to capture a gestural quality – one that transmits the motion of the sculptor in addition to that of the subject. A mould is made from the clay pattern, either as a piece mould from plaster, or using flexible gel or similar rubber-like materials stabilized by a plaster jacket of several pieces. Often a plaster master will be made from this mould for further refinement. Such

1800-494: Is my message to the American people: to look for a serious government that looks out for their interests and does not attack others, their lands, or their honor. My word to American journalists is not to ask why we did that but to ask what their government has done that forced us to defend ourselves. Bin Laden orchestrated the September 11 attacks. He initially denied involvement, but later recanted his denial. Al Jazeera broadcast

1900-407: Is removed to reduce the likelihood of interior corrosion. Incomplete voids created by gas pockets or investment inclusions are then corrected by welding and carving. Small defects where sprues and vents were attached are filed or ground down and polished. For a large sculpture, the artist will usually prepare small study models until the pose and proportions are determined. An intermediate-sized model

2000-405: Is then constructed with all of the final details. For very large works, this may again be scaled to a larger intermediate. From the final scale model, measuring devices are used to determine the dimensions of an armature for the structural support of a full-size temporary piece, which is brought to rough form by wood, cardboard, plastic foam, and/or paper to approximately fill the volume while keeping

2100-406: The 1982 Lebanon War . Some analysts, including political scientists John Mearsheimer and Stephen Walt , also claimed that U.S. support of Israel was a motive for the attacks. In 2004 and 2010, bin Laden again connected the September 11 attacks with U.S. support of Israel, although most of the letters expressed bin Laden's disdain for President Bush and bin Laden's hope to "destroy and bankrupt"

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2200-966: The 9/11 Commission in April 2004, then— Attorney General John Ashcroft recalled that the "single greatest structural cause for the September 11th problem was the wall that segregated or separated criminal investigators and intelligence agents". Clarke also wrote: "[T]here were... failures to get information to the right place at the right time". Early on the morning of Tuesday, September 11, 2001, nineteen hijackers took control of four commercial airliners (two Boeing 757s and two Boeing 767s ). Large planes with long flights were selected for hijacking because they would have more fuel. * Eastern Daylight Time (UTC−04:00) Excluding hijackers Including emergency workers Including hijackers At 7:59 a.m., American Airlines Flight 11 took off from Logan International Airport in Boston . Fifteen minutes into

2300-637: The Arabian Peninsula . In a second 1998 fatwā , bin Laden outlined his objections to American foreign policy with respect to Israel , as well as the continued presence of American troops in Saudi Arabia after the Gulf War . Bin Laden maintained that Muslims are obliged to attack American targets until the aggressive policies of the U.S. against Muslims were reversed. The Hamburg cell in Germany included Islamists who eventually came to be key operatives in

2400-561: The Central Intelligence Agency informed President George W. Bush that its Counterterrorism Center had identified the attacks as having been the work of Al-Qaeda under Osama bin Laden . The United States formally responded by launching the war on terror and invading Afghanistan to depose the Taliban , which rejected U.S. terms to expel Al-Qaeda from Afghanistan and extradite its leaders. The U.S.'s invocation of Article 5 of

2500-696: The INS , the State Department, the Customs Service , and the FBI to put Hazmi and Mihdhar on their watchlists, but the FBI was prohibited from using criminal agents in searching for the duo, hindering their efforts. Also in July, a Phoenix -based FBI agent sent a message to FBI headquarters, Alec Station, and FBI agents in New York alerting them to "the possibility of a coordinated effort by Osama bin Laden to send students to

2600-600: The Indus Valley Civilisation and dating back to c.  2500 BCE , is perhaps the first known bronze statue. Life-sized bronze statues in Ancient Greece have been found in good condition; one is the seawater-preserved bronze Victorious Youth that required painstaking efforts to bring it to its present state for museum display. Far more Roman bronze statues have survived. The ancient Chinese knew both lost-wax casting and section mould casting, and during

2700-458: The New York metropolitan area . As it was a memorable feature of the Twin Towers site, there was much discussion about using it in a memorial, especially since it seemed to have survived the attacks relatively intact. German film director Percy Adlon , who had twice previously devoted films to Koenig, made Koenigs Kugel ( Koenig's Sphere ) at a time when the sculpture's fate was still uncertain. In

2800-526: The September 11 attacks . The work, weighing more than 20 tons, was the only remaining work of art to be recovered largely intact from the ruins of the collapsed Twin Towers. After being dismantled and stored near a hangar at John F. Kennedy International Airport , the sculpture was the subject of the 2001 documentary Koenig's Sphere . Since then, the bronze sphere has become a memorial for the attacks. The sculpture

2900-523: The Shang dynasty created large numbers of Chinese ritual bronzes , ritual vessels covered with complex decoration, which were buried in sets of up to 200 pieces in the tombs of royalty and the nobility. Over the long creative period of Egyptian dynastic art, small lost-wax bronze figurines were made in large numbers; several thousand of them have been conserved in museum collections. The 7th-8th century Sri Lankan Sinhalese bronze statue of Buddhist Tara , now in

3000-706: The White House . Alerted to the previous attacks, the passengers revolted against the hijackers who crashed the aircraft into a field near Shanksville, Pennsylvania , at 10:03 a.m. The Federal Aviation Administration ordered an indefinite ground stop for all air traffic in U.S. airspace, preventing any further aircraft departures until September 13 and requiring all airborne aircraft to return to their point of origin or divert to Canada. The actions undertaken in Canada to support incoming aircraft and their occupants were collectively titled Operation Yellow Ribbon . That evening,

3100-557: The World Trade Center and the Pentagon. Another video obtained by Al Jazeera in September 2006 showed bin Laden with one of the attacks' chief planners, Ramzi bin al-Shibh , as well as hijackers, Hamza al-Ghamdi and Wail al-Shehri , amidst making preparations for the attacks. Journalist Yosri Fouda of the Arabic television channel Al Jazeera reported that in April 2002, al-Qaeda member Khalid Sheikh Mohammed admitted his involvement in

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3200-587: The World Trade Center site (colloquially "Ground Zero") took eight months and was completed in May 2002, while the Pentagon was repaired within a year. After delays in the design of a replacement complex, six new buildings were planned to replace the lost towers, along with a museum and memorial dedicated to those who were killed or injured in the attacks. The tallest building, One World Trade Center , began construction in November 2006; it opened in November 2014. Memorials to

3300-585: The 1960s and early 1970s. At that time Fritz Koenig was established as an artist in the United States. After the World Trade Center's architect Minoru Yamasaki had seen the work of the German sculptor in the George W. Staempfli Gallery in New York, he asked Koenig to create a sculpture including a fountain for the space between the World Trade Center's twin towers, which were then under construction . In 1967, Koenig

3400-458: The 1998 fatwa , al-Qaeda identified the Iraq sanctions as a reason to kill Americans, condemning the "protracted blockade" among other actions that constitute a declaration of war against "Allah, his messenger, and Muslims". In 2004, bin Laden claimed that the idea of destroying the towers had first occurred to him in 1982 when he witnessed Israel's bombardment of high-rise apartment buildings during

3500-446: The 9/11 attacks were a strategic move to provoke America into a war that would incite a pan-Islamic revolution. Documents seized during the 2011 operation that killed bin Laden included notes handwritten by bin Laden in September 2002 with the heading "The Birth of the Idea of September 11". He describes how he was inspired by the crash of EgyptAir Flight 990 on October 31, 1999, which

3600-454: The 9/11 attacks. Mohamed Atta ; Marwan al-Shehhi ; Ziad Jarrah ; Ramzi bin al-Shibh; and Said Bahaji were all members of al-Qaeda's Hamburg cell. Bin Laden asserted that all Muslims must wage a defensive war against the United States and combat American aggression. He further argued that military strikes against American assets would send a message to the American people , attempting to force

3700-658: The British Museum, is an excellent example of Sri Lankan bronze statues. From the ninth through the thirteenth century the Chola dynasty in South India represented the pinnacle of bronze casting in India. Making bronzes is highly skilled work, and a number of distinct casting processes may be employed, including lost-wax casting (and its modern-day spin-off investment casting ), sand casting and centrifugal casting . The term "bronze"

3800-624: The CIA's Presidential Daily Brief, designated "For the President Only", was entitled Bin Ladin Determined To Strike in US . The memo noted that FBI information "indicates patterns of suspicious activity in this country consistent with preparations for hijackings or other types of attacks". In mid-August, one Minnesota flight school alerted the FBI about Zacarias Moussaoui , who had asked "suspicious questions". The FBI found that Moussaoui

3900-566: The FBI and the State Department to alert the embassies and police departments, and the Defense Department to go to "Threat Condition Delta". Clarke later wrote: Somewhere in CIA there was information that two known al Qaeda terrorists had come into the United States. Somewhere in the FBI, there was information that strange things had been going on at flight schools in the United States.   [...] They had specific information about individual terrorists from which one could have deduced what

4000-516: The FBI's international terrorism division, emailed his superiors at the CIA's Counterterrorism Center (CTC) requesting permission to inform the FBI that Hazmi was in the country and that Mihdhar had a U.S. visa. The CIA never responded. The same day, Margarette Gillespie, an FBI analyst working in the CTC, was told to review material about the Malaysia meeting. She was not told of the participant's presence in

4100-507: The FBI. The Malaysian Special Branch observed the January 5, 2000, meeting of the two al-Qaeda members and informed the CIA that Mihdhar, Hazmi, and Khallad were flying to Bangkok , but the CIA never notified other agencies of this, nor did it ask the State Department to put Mihdhar on its watchlist. An FBI liaison asked permission to inform the FBI of the meeting but was told: "This is not

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4200-614: The North Atlantic Treaty —its only usage to date—called upon allies to fight al-Qaeda. As U.S. and NATO invasion forces swept through Afghanistan, bin Laden eluded them . He denied any involvement until 2004 , when excerpts of a taped statement in which he accepted responsibility for the attacks were released. Al-Qaeda's cited motivations included U.S. support of Israel , the presence of U.S. military bases in Saudi Arabia and sanctions against Iraq . The nearly decade-long manhunt for bin Laden concluded on May 2, 2011, when he

4300-416: The Pentagon , which contains more than 64,000 workers, a military base which has a big concentration of army and intelligence ... As for the World Trade Center , the ones who were attacked and who died in it were part of a financial power. It wasn't a children's school! Neither was it a residence. The consensus is that most of the people who were in the towers were men who backed the biggest financial force in

4400-548: The Port Authority family were killed on 9/11. This is an artifact that survived and was affected by the horrors of 9/11, and placing it on the memorial plaza, we think, is entirely appropriate. When Liberty Park opened in June 2016, the question had not been resolved. On July 22, 2016, the Port Authority voted to move the sculpture to Liberty Park, and in August 2017, PANYNJ relocated the sculpture to Liberty Park. On September 6, 2017,

4500-579: The Sphere was unveiled in its permanent home in Liberty Park, overlooking the World Trade Center site. The Port Authority of New York and New Jersey held a ceremony at Liberty Park on November 29, 2017, to mark its return to the World Trade Center site. In his documentary Koenigs Kugel – der deutsche Bildhauer Fritz Koenig im Trümmerfeld von Ground Zero ("Koenig's Sphere"), the German director Percy Adlon shows Koenig's encounter with his badly damaged work of art

4600-465: The Twin Towers of the World Trade Center in New York City and the third into the Pentagon (headquarters of the U.S. Department of Defense ) in Arlington County, Virginia . The fourth plane crashed in rural Pennsylvania during a passenger revolt. The September 11 attacks killed 2,977 people, making it the deadliest terrorist attack in history. In response to the attacks, the United States waged

4700-547: The U.S. Other motives have been suggested in addition to those stated by bin Laden and al-Qaeda. Some authors suggested the "humiliation" that resulted from the Islamic world falling behind the Western world—this discrepancy was rendered especially visible by globalization and a desire to provoke the U.S. into a broader war against the Islamic world in the hope of motivating more allies to support al-Qaeda. Similarly, others have argued

4800-441: The U.S. The CIA gave Gillespie surveillance photos of Mihdhar and Hazmi from the meeting to show to FBI counterterrorism but did not tell her their significance. The Intelink database informed her not to share intelligence material with criminal investigators. When shown the photos, the FBI refused more details on their significance, and they were not given Mihdhar's date of birth or passport number. In late August 2001, Gillespie told

4900-450: The U.S. economy and induced global market shocks . Many other countries strengthened anti-terrorism legislation and expanded their powers of law enforcement and intelligence agencies . The total number of deaths caused by the attacks, combined with the death tolls from the conflicts they directly incited, has been estimated by the Costs of War Project to be over 4.5 million. Cleanup of

5000-508: The U.S. to re-evaluate its support to Israel , and other aggressive policies. In a 1998 interview with American journalist John Miller , bin Laden stated: We do not differentiate between those dressed in military uniforms and civilians; they are all targets in this fatwa. American history does not distinguish between civilians and military, not even women and children. They are the ones who used bombs against Nagasaki. Can these bombs distinguish between infants and military? America does not have

5100-438: The United States to attend civil aviation universities and colleges". The agent, Kenneth Williams, suggested the need to interview flight school managers and identify all Arab students seeking flight training. In July, Jordan alerted the U.S. that al-Qaeda was planning an attack on the U.S.; "months later", Jordan notified the U.S. that the attack's codename was "The Big Wedding" and that it involved airplanes. On August 6, 2001,

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5200-761: The attacks include the National September 11 Memorial & Museum in New York City, the Pentagon Memorial in Arlington County, Virginia, and the Flight 93 National Memorial at the Pennsylvania crash site. In 1996, Osama bin Laden of the Islamist militant organization al-Qaeda issued his first fatwā , which declared war against the United States and demanded the expulsion of all American soldiers from

5300-826: The attacks and said they were carried out because: The events that affected my soul in a direct way started in 1982 when America permitted the Israelis to invade Lebanon and the American Sixth Fleet helped them in that. This bombardment began and many were killed and injured and others were terrorised and displaced. I couldn't forget those moving scenes, blood and severed limbs, women and children sprawled everywhere. Houses were destroyed along with their occupants, high rises demolished over their residents, rockets raining down on our home without mercy...As I looked at those demolished towers in Lebanon, it entered my mind that we should punish

5400-461: The attacks as retaliatory strikes against American atrocities against Muslims across the world. He also maintained that the attacks were not directed against women and children, asserting that the targets of the strikes were symbols of America's "economic and military power". In bin Laden's November 2002 Letter to the American People , he identified al-Qaeda's motives for the attacks: After

5500-408: The attacks, along with Ramzi bin al-Shibh. The 2004 9/11 Commission Report determined that the animosity which Mohammed, the principal architect of the 9/11 attacks, felt towards the United States had stemmed from his "violent disagreement with U.S. foreign policy favoring Israel". Mohammed was also an adviser and financier of the 1993 World Trade Center bombing and the uncle of Ramzi Yousef ,

5600-402: The attacks, bin Laden and Ayman al-Zawahiri released additional recordings , some of which repeated the above reasons. Two relevant publications were bin Laden's 2002 Letter to the American People and a 2004 videotape by bin Laden. [...] those young men, for whom God has cleared the way, didn't set out to kill children, but rather attacked the biggest centre of military power in the world,

5700-469: The attacks, said: It has become clear that the West in general and America in particular have an unspeakable hatred for Islam.   ... It is the hatred of crusaders . Terrorism against America deserves to be praised because it was a response to injustice, aimed at forcing America to stop its support for Israel, which kills our people.   ... We say that the end of the United States is imminent, whether Bin Laden or his followers are alive or dead, for

5800-511: The awakening of the Muslim ummah [nation] has occurred.   ... It is important to hit the economy (of the United States), which is the base of its military power...If the economy is hit they will become reoccupied. Shortly before the 2004 U.S. presidential election , bin Laden used a taped statement to publicly acknowledge al-Qaeda's involvement in the attacks. He admitted his direct link to

5900-538: The creation of extended figures, as in Jeté , or figures that have small cross sections in their support, such as the equestrian statue of Richard the Lionheart . But the value of the bronze for uses other than making statues is disadvantageous to the preservation of sculptures; few large ancient bronzes have survived, as many were melted down to make weapons or ammunition in times of war or to create new sculptures commemorating

6000-435: The deadliest terrorist attack in history as well as the deadliest incident for firefighters and law enforcement personnel in American history, killing 343 and 72 members, respectively. The loss of life stemming from the impact of Flight 11 made it the most lethal multi-plane crash in aviation history followed by the death toll incurred by Flight 175. The destruction of the World Trade Center and its environs seriously harmed

6100-480: The destruction of the remaining five structures in the complex and damaging or destroying nearby buildings. American Airlines Flight 77 flew towards Washington, D.C. and crashed into the Pentagon at 9:37 a.m., causing a partial collapse. The fourth and final flight, United Airlines Flight 93 , also changed course towards Washington, believed by investigators to target either the United States Capitol or

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6200-453: The effort to move The Sphere to the plaza of the National September 11 Memorial & Museum . After a public comment by Michael Burke during a meeting of the Board of Commissioners , Executive Director Patrick J. Foye stated: The point that Mr. Burke made resonates with many people in New York and New Jersey and many people here at the Port Authority, especially given the fact that 84 members of

6300-507: The end of 1971 in Ganslberg near Landshut , where Fritz Koenig lived. The work on the plaster model in its original size required the construction of a new workshop hall near Koenig's homestead and actual studio. Koenig was supported in the production of his work of art by his long-time assistant Hugo Jahn and the South Tyrolean sculptor Josef Plankensteiner. From 1969 the plaster elements of

6400-581: The film, the artist and the director visit Ground Zero five weeks after the attacks as the former retells the story of its creation. At first, Koenig opposed reinstalling The Sphere, considering it "a beautiful corpse". The sculpture was eventually returned to Manhattan, and on March 11, 2002, six months to the day after the attacks, it was re-erected in Battery Park, near the Hope Garden , several blocks away from where it once stood. Koenig himself supervised

6500-505: The flight, five hijackers armed with boxcutters took over the plane, injuring at least three people (and possibly killing one) before forcing their way into the cockpit. The terrorists also displayed an apparent explosive and sprayed mace into the cabin, to frighten the hostages into submission and further hinder resistance. Back at Logan, United Airlines Flight 175 took off at 8:14 a.m. Hundreds of miles southwest at Dulles International Airport , American Airlines Flight 77 left

6600-531: The gate at 8:00 a.m., the plane was running 42 minutes late. At 8:46 a.m., Flight 11 was deliberately crashed into the north face of the World Trade Center's North Tower between the 93rd and 99th floors. The initial presumption by many was that it was an accident. At 8:51 a.m., American Airlines Flight 77 was also taken over by five hijackers who forcibly entered the cockpit 31 minutes after take-off. Although they were equipped with knives, there were no reports of anyone on board being stabbed, nor did

6700-741: The hijackers. Bin Laden overruled Mohammed, rejecting potential targets such as the U.S. Bank Tower in Los Angeles for lack of time. Bin Laden provided leadership and financial support and was involved in selecting participants. He initially selected Nawaf al-Hazmi and Khalid al-Mihdhar , both experienced jihadists who had fought in Bosnia . Hazmi and Mihdhar arrived in the United States in mid-January 2000. In early 2000, Hazmi and Mihdhar took flying lessons in San Diego, California. Both spoke little English, performed poorly in flying lessons, and eventually served as secondary "muscle" hijackers. In late 1999,

6800-555: The lead bomber in that attack. In late 1994, Mohammed and Yousef moved on to plan a new terrorist attack called the Bojinka plot planned for January 1995. Despite a failure and Yousef's capture by U.S. forces the following month, the Bojinka plot would influence the later 9/11 attacks. In "Substitution for Testimony of Khalid Sheikh Mohammed" from the trial of Zacarias Moussaoui , five people are identified as having been completely aware of

6900-451: The model is made in wax, possibly formed over a core, or with a core cast in place, if the piece is to be hollow. If no mould is made and the casting process fails, the artwork will also be lost. After the metal has cooled, the external ceramic or clay is chipped away, revealing an image of the wax form, including core pins, sprues, vents, and risers. All of these are removed with a saw and tool marks are polished away, and interior core material

7000-633: The multi-decade global war on terror to eliminate hostile groups deemed terrorist organizations, as well as the foreign governments purported to support them. Ringleader Mohamed Atta flew American Airlines Flight 11 into the North Tower of the World Trade Center complex in Lower Manhattan at 8:46 a.m. Seventeen minutes later, United Airlines Flight 175 hit the South Tower . Both collapsed within an hour and forty-one minutes, bringing about

7100-401: The one I gave to it." A plaque alongside The Sphere read as follows: For three decades, this sculpture stood in the plaza of the World Trade Center. Entitled The Sphere , it was conceived by artist Fritz Koenig as a symbol of world peace. It was damaged during the tragic events of September 11, 2001, but endures as an icon of hope and the indestructible spirit of this country. The Sphere

7200-403: The operation's details. They are bin Laden, Khalid Sheikh Mohammed, Ramzi bin al-Shibh , Abu Turab al-Urduni and Mohammed Atef . Osama bin Laden's declaration of a holy war against the United States, and a 1998 fatwā signed by bin Laden and others that called for the killing of Americans, are seen by investigators as evidence of his motivation. In November 2001, bin Laden defended

7300-514: The oppressor in kind and that we should destroy towers in America so that they taste some of what we tasted and so that they be deterred from killing our women and children. And that day, it was confirmed to me that oppression and the intentional killing of innocent women and children is a deliberate American policy. Destruction is freedom and democracy, while resistance is terrorism and intolerance. Bin Laden personally directed his followers to attack

7400-569: The organization-including Abu Hafs the Mauritanian , Sheikh Saeed al Masri , and Sayf al Adl . One senior al Qaeda operative claims to recall Bin Ladin arguing that attacks against the United States needed to be carried out immediately to support insurgency in the Israeli-occupied territories and protest the presence of U.S. forces in Saudi Arabia. On July 13, Tom Wilshire, a CIA agent assigned to

7500-591: The pan below the candle. The proportions of this mixture may suggest that the candlestick was made from a hoard of old coins. The Benin Bronzes are really brass , and the Romanesque Baptismal font at St Bartholomew's Church, Liège is described as both bronze and brass. In the Bronze Age, two forms of bronze were commonly used: "classic bronze", about 10% tin, was used in casting; and "mild bronze", about 6% tin,

7600-582: The runway at 8:20 a.m. Flight 175's journey proceeded normally for 28 minutes until 8:42 am, when a group of five hijacked the plane, murdering both pilots and stabbing several crew members before assuming control of the aircraft. These hijackers also used bomb threats to instil fear into the passengers and crew, also spraying chemical weapons to disable any opposition. Concurrently, United Airlines Flight 93 departed from Newark International Airport in New Jersey ; originally scheduled to pull away from

7700-481: The same metal used for casting. One or more wax sprues are added to conduct the molten metal into the sculptures - typically directing the liquid metal from a pouring cup to the bottom of the sculpture, which is then filled from the bottom up in order to avoid splashing and turbulence. Additional sprues may be directed upward at intermediate positions, and various vents may also be added where gases could be trapped. (Vents are not needed for ceramic shell casting, allowing

7800-451: The sculpture once Battery Park construction commenced, requiring the sculpture to be moved, possibly into storage. An online petition created by 9/11 families demanding the return of The Sphere to the 9/11 Memorial gained more than 7,123 signatures as of March 23, 2011. Officials from the 9/11 Memorial stated that they did not want any 9/11 artifacts cluttering the 8-acre memorial plaza. On June 28, 2012, PANYNJ expressed support for

7900-572: The sculpture to be moved. The Port Authority of New York and New Jersey (PANYNJ), which owns The Sphere , considered placing the sculpture in Liberty Park , located between the 90 West Street building and the World Trade Center Memorial site. Liberty Park would not be constructed until at least 2014, so a temporary location was needed to place The Sphere . By February 2011, PANYNJ had not made an official final decision on where to place

8000-451: The sphere and the base were put together again on site so that Koenig's sculpture as a whole could set off by sea across the Atlantic to New York in a specially made, oversized wooden transport box. In 1971, The Sphere was finally installed on the World Trade Center's plaza and ceremoniously unveiled a little later. The sculpture, including the fountain, marked the center of the development and

8100-541: The sphere, dismantled into 67 individual parts, were cast in bronze in the Munich art foundry Hans Mayr. Then the individual bronze segments with a total combined weight of seventeen tons were brought to the workshop in Ganslberg and assembled there. After four years of planning and manufacturing, the finished sculpture was dismantled again and transported to the port of Bremen with low loaders and trucks. The bronze elements of

8200-541: The spring of 2001, the secondary hijackers began arriving in the United States. In July 2001, Atta met with bin al-Shibh in Tarragona , Catalonia, Spain, where they coordinated details of the plot, including final target selection. Bin al-Shibh passed along bin Laden's wish for the attacks to be carried out as soon as possible. Some of the hijackers received passports from corrupt Saudi officials who were family members or used fraudulent passports to gain entry. There have been

8300-481: The sprue to be simple and direct). The complete wax structure (and core, if previously added) is then invested in another kind of mould or shell, which is heated in a kiln until the wax runs out and all free moisture is removed. The investment is then soon filled with molten bronze. The removal of all wax and moisture prevents the liquid metal from being explosively ejected from the mould by steam and vapour. Students of bronze casting will usually work in direct wax, where

8400-573: The system was designed at the Institute for Hydrology and River Basin Management at the Technical University of Munich , where Koenig had been a lecturer since 1964. The largest bronze sculpture of modern times weighs over twenty tons, is 25 feet (7.6 m) high and has a diameter of 17 feet (5.2 m). Koenig called it his "biggest child". The sculpture was made between late 1968/early 1969 to

8500-478: The two people who made phone calls mention the use of mace or a bomb threat. Flight 175 was flown into the South Tower's southern facade (2   WTC) between the 77th and 85th floors at 9:03 a.m., demonstrating that the first crash was a deliberate act of terrorism. Four men aboard Flight 93 struck suddenly, killing at least one passenger, after having waited 46 minutes—a holdup that proved disastrous for

8600-450: The unusual and desirable property of expanding slightly just before they set, thus filling the finest details of a mould. Then, as the bronze cools, it shrinks a little, making it easier to separate from the mould. Their strength and ductility (lack of brittleness) is an advantage when figures in action poses are to be created, especially when compared to various ceramic or stone materials (such as marble sculpture ). These qualities allow

8700-500: The victors, while far more stone and ceramic works have come through the centuries, even if only in fragments. As recently as 2007 several life sized bronze sculptures by John Waddell were stolen, probably due to the value of the metal after the work has been melted. There are many different bronze alloys. Typically modern bronze is 88% copper and 12% tin . Alpha bronze consists of the alpha solid solution of tin in copper. Alpha bronze alloys of 4–5% tin are used to make coins and

8800-497: The weight low. Finally, plaster, clay or other material is used to form the full-size model, from which a mould may be constructed. Alternatively, a large refractory core may be constructed, and the direct-wax method then applied for subsequent investment. Before modern welding techniques, large sculptures were generally cast in one piece with a single pour. Welding allows a large sculpture to be cast in pieces, then joined. After final polishing, corrosive materials may be applied to form

8900-461: The work; it took four engineers and 15 ironworkers to create a new base. Mayor Michael Bloomberg , his predecessor Rudy Giuliani and other local officials spoke at a ceremony rededicating it as a memorial to the victims. "It was a sculpture, now it's a monument", Koenig said, noting how the relatively fragile metal globe had mostly survived the cataclysm. "It now has a different beauty, one I could never imagine. It has its own life – different from

9000-466: The world, which spreads mischief throughout the world. As an adherent of Islam , bin Laden believed that non-Muslims are forbidden from having a permanent presence in the Arabian Peninsula . In 1996, bin Laden issued a fatwā calling for American troops to leave Saudi Arabia. One analysis of suicide terrorism suggested that without U.S. troops in Saudi Arabia, Al-Qaeda likely would not have been able to get people to commit to suicide missions. In

9100-550: Was a popular meeting place for New Yorkers. The work of art was dedicated to "world peace through trade". The original name "Große Kugelkaryatide N.Y." did not catch on with the New Yorkers. They called the spherical sculpture "Koenig Sphere" or simply "The Sphere". After the September 11 attacks , upon recovery from the rubble pile, the sculpture was dismantled and sent to storage near John F. Kennedy International Airport . Its extraction had been widely covered in local news media in

9200-496: Was a radical who had traveled to Pakistan, and the INS arrested him for overstaying his French visa. Their request to search his laptop was denied by FBI headquarters due to the lack of probable cause . The failures in intelligence-sharing were attributed to 1995 Justice Department policies limiting intelligence-sharing, combined with CIA and NSA reluctance to reveal "sensitive sources and methods" such as tapped phones. Testifying before

9300-466: Was about to happen. None of that information got to me or the White House. [...] by July [2001], with word spreading of a coming attack, a schism emerged among the senior leadership of al Qaeda. Several senior members reportedly agreed with Mullah Omar . Those who reportedly sided with bin Ladin included Atef , Sulayman Abu Ghayth , and KSM . But those said to have opposed him were weighty figures in

9400-496: Was awarded the contract by the Port Authority of New York and New Jersey as the client and property owner of the development. The Sphere falls into Koenig's creative phase of various caryatids , in which Koenig stages a struggle with constricting or burdensome geometrizing masses. With his sculpture Koenig wanted to mark a formal contrast to the skyscrapers. Mounted on a porphyry disk measuring 3.3 feet (1.0 m) high, with

9500-590: Was deliberately crashed by co-pilot Gameel Al-Batouti , killing over 200 passengers. "This is how the idea of 9/11 was conceived and developed in my head, and that is when we began the planning" bin Laden continued, adding that no one but Abu Hafs and Abu al-Khair knew about it at the time. The 9/11 Commission Report identified Khalid Sheikh Mohammed as the architect of 9/11, but he is not mentioned in bin Laden's notes. The attacks were conceived by Khalid Sheikh Mohammed , who first presented it to Osama bin Laden in 1996. At that time, bin Laden and Al-Qaeda were in

9600-429: Was hammered from ingots to make sheets. Bladed weapons were mostly cast from classic bronze, while helmets and armour were hammered from mild bronze. According to one definition, modern "statuary bronze" is 90% copper and 10% tin. The great civilizations of the old world worked in bronze for art, from the time of the introduction of the alloy for tools and edged weapons. Dancing Girl from Mohenjo-daro , belonging to

9700-564: Was installed in Battery Park between 2002 and 2017, when the Port Authority of New York and New Jersey moved it to Liberty Park , overlooking the September 11 Memorial and its original location. The sculpture, rededicated at its permanent location on August 16, 2017, has been kept in the badly damaged condition it was found in after the September 11 attacks. The creation of the originally titled Große Kugelkaryatide N.Y. / Great Caryatid Sphere N.Y. ( catalogue raisonné Sk 416) dates to

9800-596: Was killed during a U.S. military raid on his compound in Abbottabad, Pakistan . The War in Afghanistan continued for another eight years until the agreement was made in February 2020 for American and NATO troops to withdraw from the country . Excluding the hijackers, the attacks killed 2,977 people, injured thousands more and gave rise to substantial long-term health consequences while also causing at least $ 10   billion in infrastructure and property damage. It remains

9900-464: Was placed here on March 11, 2002 as a temporary memorial to all who lost their lives in the terrorist attacks at the World Trade Center . This eternal flame was ignited on September 11, 2002, in honor of all those who were lost. Their spirit and sacrifice will never be forgotten. According to NYC Parks spokeswoman Vickie Karp, the city was looking to relocate The Sphere in summer 2012, when construction began to restore Battery Park's lawn, requiring

10000-783: Was the seat of the Holy Roman Empire and Habsburg monarchy , both major powers in Europe at the time. For Osama bin Laden, this was a date when the West gained some dominance over Islam, and by attacking on this date, he hoped to make a step in Islam "winning" the war for worldwide power and influence. In late 1999, al-Qaeda associate Walid bin Attash ("Khallad") contacted Mihdhar and told him to meet in Kuala Lumpur , Malaysia; Hazmi and Abu Bara al Yemeni would also be in attendance. The NSA intercepted

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