When they process the phosphate ore, which has Calcium Phosphate as the main source of the phosphorous that is extracted, the process creates Calcium Sulphate, gypsum, which contains a trace amount of a radionuclide (not sure which), that makes the gypsum unusable for any use, other than creating huge mounds.
When they process the phosphate ore, which has Calcium Phosphate as the main source of the phosphorous that is extracted, the process creates Calcium Sulphate, gypsum, which contains a trace amount of a radionuclide (not sure which), that makes the gypsum unusable for any use, other than creating huge mounds.