http://www.anapsid.org/cnd/diffdx/mercurysources.html
As a sidebar, interesting: things other than vaccines that are preserved with Thimerosol:
Antitoxins (! - UT)
Cosmetics, including makeup removers, mascara, and eye moisturizers
Desensitizing solutions
Ear, eye, and nose drops
Eye ointments
MercurochromeŽ
Merthiolate topical antiseptic
Soap-free cleaners
Some contact lens solutions
Topical medicated sprays
Topical medications
Tuberculin tests
Other sources of mercury:
Adhesives
Air conditioner filters
Amalgams (silver fillings)
Auto exhaust
Batteries
Bleached flour
Calomel (talc, body powders)
Cinnabar (used in jewelry)
Drinking water (tap and well), plumbing and piping
Fabric softeners
Felt
Floor waxes and polishes
Laxatives
Paint pigments and solvents
Pesticides
Processed foods
Vegetables and fruits exposed to pesticides
Wood preservatives