ATSDR - Public Health Statement: Mercury (1990) Information on what is, how one might be exposed, and how mercury can affect ones health.
http://www.atsdr.cdc.gov/ToxProfiles/phs8916.html
Information from the Environmental Protection Agency about asbestos hazards, regulations, publications and resources.
http://www.epa.gov/opptintr/asbestos/index.html