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originally posted by: democracydemo
a reply to: neutronflux
Correct ,the booms (sound) that start prior to visual (light) of the collapse and continues as collapse progress.
Source of the booms are not air condition units nor transformers, but evidence of pre setup explosive material...exploding.
Katie Bender's family commemorate 20 years since Royal Canberra Hospital implosion
www.canberratimes.com.au...
The public's attendance was encouraged by the then ACT Liberal Government. Katie was standing more than 400m away from the explosion but killed instantly when she was hit by a piece of flying steel.
Break
Seconds after the explosion on that Sunday afternoon, Katie was was killed instantly by a steel fragment sent flying from 430 metres across the lake. It was thought to be travelling at 140km/h.
Canberra Hospital Implosion 1997
m.youtube.com...
the-pre-collapse-inward-bowing-of-wtc2.t4760/
www.metabunk.org...
Bell J-2A helicopter at 100 ft (100 dB).
Which is eight times as loud as 70 dB.
www.chem.purdue.edu...
coolest building implosion
m.youtube.com...
www.metabunk.org...
the-pre-collapse-inward-bowing-of-wtc2.t4760/
explained-flashes-of-light-during-the-world-trade-center-collapse.t10224/
www.metabunk.org...
Bell J-2A helicopter at 100 ft (100 dB). Which is eight times as loud as 70 dB.
originally posted by: democracydemo
a reply to: neutronflux
Bell J-2A helicopter at 100 ft (100 dB). Which is eight times as loud as 70 dB.
Yes at 100ft
Mr. Huibregtse was not at 100ft. He was at 292 Greenwich Street.
originally posted by: democracydemo
a reply to: neutronflux
What is the dB of these booms at that distance (292 Greenwich Street)? Does ATS community have an "audioperson" for this task?
You heard these sequential booms, but refuse to admit to CD by "ac units" exploding.
originally posted by: 11SK1180
Apparentley it took two planes to do what demolition experts could not easily achive. Drop 2 huge towers and tower 7 near perfectly into their own footprints.
Along with the 110-floor Twin Towers, numerous other buildings at the World Trade Center site were destroyed or badly damaged, including WTC buildings 3 through 7 and St. Nicholas Greek Orthodox Church.[162] The North Tower, South Tower, the Marriott Hotel (3 WTC), and 7 WTC were destroyed. The U.S. Customs House (6 World Trade Center), 4 World Trade Center, 5 World Trade Center, and both pedestrian bridges connecting buildings were severely damaged. The Deutsche Bank Building on 130 Liberty Street was partially damaged and demolished some years later, starting in 2007.[163][164] The two buildings of the World Financial Center also suffered damage.[163] The last fires at the World Trade Center site were extinguished on December 20, exactly 100 days after the attacks.[165]
The Deutsche Bank Building across Liberty Street from the World Trade Center complex was later condemned as uninhabitable because of toxic conditions inside the office tower, and was deconstructed.[166][167] The Borough of Manhattan Community College's Fiterman Hall at 30 West Broadway was condemned due to extensive damage in the attacks, and was reopened in 2012.[168] Other neighboring buildings (including 90 West Street and the Verizon Building) suffered major damage but have been restored.[169] World Financial Center buildings, One Liberty Plaza, the Millenium Hilton, and 90 Church Street had moderate damage and have since been restored.[170] Communications equipment on top of the North Tower was also destroyed, with only WCBS-TV maintaining a backup transmitter on the Empire State Building, but media stations were quickly able to reroute the signals and resume their broadcasts.[162][171]
The PATH train system's World Trade Center station was located under the complex. As a result, the entire station was demolished completely when the towers collapsed, and the tunnels leading to Exchange Place station in Jersey City, New Jersey were flooded with water.[172] The station was rebuilt as the $4 billion World Trade Center Transportation Hub, which reopened in March 2015.[173][174] The WTC Cortlandt Street station on the New York City Subway's IRT Broadway-Seventh Avenue Line was also within close proximity to the World Trade Center complex, and the entire station, along with the surrounding track, was reduced to rubble.[175] The latter station was rebuilt and reopened to the public on September 8, 2018.[176]
en.m.wikipedia.org...