A sinkhole the size of 300 Olympic swimming pools at a Florida fertilizer plant has leaked radioactive wastewater into the states aquifer. It took the company more than three weeks to alert the public. Fixing the leak will cost $20 to $50 million.
The retention pond which dissolved into the 45-foot wide sinkhole contained hazardous waste, including phosphogypsum, a radioactive byproduct resulting from the production of phosphate fertilizer. The 215 million gallons of waste contained uranium, radium and radon gas.