Sources

All info is taken from the following sources:

American Cancer Society, http://www.cancer.org/Cancer/MalignantMesothelioma/index

U.S. Dept. of Labor, Occupational Safety & Health Administration, http://www.osha.gov/SLTC/asbestos/
Pass, H., Vogelzang, N., & Carbone, M. (Eds.). (2005). Malignant Mesothelioma: Advances in Pathogenesis, 

Diagnosis, and Translational Therapies. New York, NY: Springer.
Occupational Exposure to Hazardous Agents, "Asbestos," http://hazmap.nlm.nih.gov/cgi-bin/hazmap_generic?tbl=TblAgents&id=1
National Cancer Institute, "Asbestos Exposure and Cancer Risk,"http://www.cancer.gov/cancertopics/factsheet/Risk/asbestos