mined in Libby, MT. (by HR Grace) was used in the towers as insullation.
Libby is now a super fund site, hundreds of residents have sickened and died due to asbestoses from the years of mining and milling the asbestos laden vermiculite.
It's amazing how many people can be randomly sacrificed by Corporate greed, and how relatively little public outcry there is about it.
Libby was a classic corporate conspiracy. WR Grace had the data which proved their product was deadly, and kept it hushed up for years until the victims started showing up. Then an investigation showed WR Grace had conspired to hide the health risks caused by their product and there products manufacturing. They did this successfully for about 28 years in production and then for another 6 or 7 years until finally in the late ninties the EPA took a look. If these guys could get away with this for 30 something years and their motivation
Here's a pretty good article with some over view up to the filing of the original charges. The charges mentioned in the article were later dropped by a MT.judge based on a claim of statue of limitations. New charges were refiled and the plaintifs are fighting them on a double jepordy claim.
http://seattlepi.nwsource.com/national/211169_libby08.htmlsnip
Mine's huge production
Opened in 1913, the mine is six miles from Libby. Grace bought it in 1963 and closed it in 1990. In its heyday, the mine produced 80 percent of the world's vermiculite. The company still operates smaller vermiculite mines in South Carolina.
Vermiculite, a mineral similar to mica, expands when heated into featherweight pieces that have been used commercially for decades in attic and wall insulation, wallboard, fireproofing, and plant nursery and forestry products. It was also used in scores of consumer products, such as lawn and garden supplies and cat litter.
Exposure to the tremolite asbestos fibers, which contaminate the vermiculite ore, has caused hundreds of cases of asbestosis, lung cancer and mesothelioma in Libby and an untold number at hundreds of other sites across North America where the ore was processed.
snip