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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
9:50 (approximately): The Associated Press reports that Flight 11 was apparently hijacked after departure from Boston's Logan Airport. Within an hour this is confirmed for both Flight 11 and Flight 175. 9:51: Chief Orio Palmer of the FDNY's 7th Battalion reaches the 78th Floor Sky Lobby of the South Tower along with Fire Marshal Ronald Bucca ...
The James Zadroga 9/11 Health and Compensation Act of 2010 (H.R. 847; Pub. L. 111–347 (text) (PDF)) is a U.S. law to provide health monitoring and aid to the first responders, volunteers, and survivors of the September 11 attacks. It is named after James Zadroga, a New York Police Department officer whose death was linked to exposures from ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 29 August 2024. Assessment that al Qaeda attacked the US This article is about the people behind the attacks organizationally. For the 19 men who physically carried out the attacks, see Hijackers in the September 11 attacks. This article uses citations that link to broken or outdated sources. Please ...
"Before 9/11" - the background of Osama bin Laden and the beginnings of al-Qaeda; early assessments by intelligences agencies concerning the possibility of a large scale attack. "The Terrorists" - profiles the al-Qaeda cell in Hamburg, Germany, the mastermind of 9/11, Khalid Shaikh Mohammed, and the other terrorists who were involved with the plot.
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Bioconcentration. In aquatic toxicology, bioconcentration is the accumulation of a water-borne chemical substance in an organism exposed to the water. [ 1][ 2] There are several ways in which to measure and assess bioaccumulation and bioconcentration. These include: octanol-water partition coefficients (K OW ), bioconcentration factors (BCF ...