Welcome to the State of California 

Asbestos

Asbestos is a naturally occurring mineral. It is mined in much the same way that other minerals, such as iron, lead, and copper, are. Asbestos is composed of silicon, oxygen, hydrogen, and various metal cations (positively charged metal ions). There are six varieties of asbestos: chrysotile, amosite, crocidolite, tremolite, actinolite, and anthophylite. The three most common are chrysotile, amosite, and crocidolite. Chrysotile fibers are pliable and cylindrical, and often arranged in bundles. Amosite and crocidolite fibers are like tiny needles.

The first commercial asbestos mine -- a chrysotile mine -- opened in Quebec, Canada, in the 1870's. Crocidolite asbestos was first mined in South Africa during the 1980's. Amosite asbestos also comes from Africa and was first mined in 1916. Unlike most minerals, which turn into dust particles when crushed, asbestos breaks up into fine fibers that are too small to be seen by the human eye. Often, individual fibers are mixed with a material that binds them together, producing an asbestos containing material (ACM).

Factsheet

Asbestos in the Home and Workplace (June, 2012)

This factsheet provides information to people who are trying to determine whether there is asbestos-containing material in their home or workplace, and what they might do if there is. It reviews health concerns about asbestos exposures, plus options and resources to address these concerns.

Asbestos in the Home and Workplace (March, 2000)

This factsheet provides information to people who are trying to determine whether there is asbestos-containing material in their home or workplace, and what they might do if there is. It reviews health concerns about asbestos exposures, plus options and resources to address these concerns. The factsheet was publish when California Department of Public Health was a Part of California Department of Health Services. 

Asbestos Links

Cal EPA Asbestos Factsheet

US EPA What is Asbestos?

 
 
Last modified on: 9/4/2014 1:59 PM