spc wrote:I would like to see a study that shows anthracite coal burning fly ash is radioactive.
Me too, but in lieu of that:http://en.wikipedia.org/wiki/Coal
and more specifically:
"Coal and coal waste products including fly ash, bottom ash, and boiler slag, contain many heavy metals, including arsenic, lead, mercury, nickel, sulphur, vanadium, beryllium, cadmium, barium, chromium, copper, molybdenum, zinc, selenium and radium, which are dangerous if released into the environment. Coal also contains low levels of uranium, thorium, and other naturally-occurring radioactive isotopes whose release into the environment may lead to radioactive contamination. While these substances are trace impurities, enough coal is burned that significant amounts of these substances are released, resulting in more radioactive waste than nuclear power plants. Mercury emissions from coal burning are concentrated as they work their way up the food chain and converted into dangerous biological compounds that have made it dangerous to eat fish from many waterways of the world."
There is no distiction made between the types of coal when radioactivity and heavy metals are mentioned. From what I understand, which is rudimentary at best, the main difference in coal types are the content of volatile materials. The source of the radioactivity isn't coming from volatiles so if you take the logical path here, it seems that "coal" is radioactive...period.
Not trying to stir anything here, just found this interesting and perhaps of concern to some folks.
coaledsweat wrote:It has about the same radioactivity as the concrete or bricks in your home IIRC.
Are you assuming that the bricks or concrete were made with fly ash as one of the ingredients?