Coal contains: URANIUM and all of the decay products of uranium, ARSENIC, LEAD, MERCURY, Antimony, Cobalt, Nickel, Copper, Selenium, Barium, Fluorine, Silver, Beryllium, Iron, Sulfur, Boron, Titanium, Cadmium, Magnesium, THORIUM, Calcium, Manganese, Vanadium, Chlorine, Aluminum, Chromium, Molybdenum and Zinc. There is so much of these elements in coal that cinders and coal smoke are actually valuable ores. We should be able to get all the uranium and thorium we need to fuel nuclear power plants for centuries using coal cinders and smoke as ore. Unburned Coal and crude oil also contain
BENZENE, THE CANCER CAUSER. We could get all of our uranium and thorium from coal ashes and cinders. The carbon content of coal ranges from 96% down to 25%, the remainder being rock of various kinds.
If you are an underground coal miner, you may be in violation of the rules for radiation workers. The uranium decay chain includes the radioactive gas RADON, which you are breathing. Radon decays in about a day into polonium, the super-poison.

Chinese industrial grade coal is sometimes stolen by peasants for cooking. The result is that the whole family dies of arsenic poisoning in days, not years because Chinese industrial grade coal contains large amounts of arsenic.

Yes, that ARSENIC is getting into the air you breathe, the water you drink and the soil your food grows in. So are all of those other heavy metal poisons. Your health would be a lot better without coal. Benzene is also found in petroleum. If you have cancer, check for benzene in your past.
See:
http://www.ornl.gov/info/ornlreview/rev26-34/text/colmain.html
or
http://clearnuclear.blogspot.com
in case the ORNL site does not work.

Make coal fired power plants meet the same requirements on radiation release that nuclear power plants have to meet. Coal fired power plants give you 100 to 400 times as much radiation as nuclear plants.