just to put my two cents in,,,when i had mercury fillings taken out of my mouth, the dentist who did the work told me that the environmental protection agency has guidelines that made it ilegal to dispose of my fillings in the garbage. it is classified as hazardous waste and he had to dispose of it through thier protocol. yet the american dental association sez there is nothing wrong with putting mercury in our mouths. talk about your x-files.....