As the World Trade Center was being built in the late 1960's and early 1970's, scientists were learning that asbestos fibers in materials commonly used to fireproof steel beams could cause cancer in workers and bystanders who were intensively exposed to the fibers, especially around mines and manufacturing plants dealing with asbestos.
A new chemical foam can break down asbestos fibers in materials once used to fireproof homes, schools, and offices.
I borrowed it from my grandmother's fireproof box when I was eleven, intending to study voodoo and use it as a totem.
But, in a conclusion that may have ramifications for understanding other tall buildings and future structures, investigators from the National Institute of Standards and Technology found that the test used to determine fireproofing sufficiency, then and now, may itself be flawed -- unable to predict accurately what will be required in a real-life fire.
Although steel is noncombustible, it starts to lose strength when heated above 400° C (750° F), and building codes require it to be fireproofed in most multistory buildings; in small and low-hazard buildings, however, it can be left unprotected.
When Elise Ward, a broker now with the firm Core, started selling TriBeCa lofts to artists in 1981, so few buildings had been renovated or had soundproofing that she used words like "fireproof" and "steel and concrete structure" to mean quiet.
The results also show that the MPCPM has good potential to be used for fireproofing doors and high temperature furnace insulation lining due to its light weight, high strength, and thermal and acoustic insulation.
Ms. Hallahan uses fireproof cabinets to store her slides and the CD's that she has burned with digital images.
Until the 1970s, the fibrous, silicate mineral was used extensively in fireproofing and insulating buildings in America, among other uses, but growing evidence of respiratory ailments due to asbestos exposure led to limits.
