A Missouri couple says their home is contaminated with dangerously high levels of radioactive waste left over from the US government’s second world war-era atomic weapons program. In a lawsuit filed in the St Louis County circuit court on Tuesday, Robbin and Mike Dailey of Bridgeton say dust samples collected from their kitchen and basement were found to contain the radioactive element thorium-230 at levels about 200 times higher than normal “background” levels.  In a move they hope shines a light on the continuing impact of the country’s early nuclear weapons program on their midwestern city, the Daileys named nine companies in their lawsuit that they say are responsible for decades of negligence that led to the contamination of their property...Long-term exposure to low levels of radiation is linked to higher rates of cancer, according to the Environmental Protection Agency (EPA)..."We have not seen the suit, or any scientific data to support its foundation,” a Republic Services spokesperson, Russ Knocke, said in an emailed statement..."...There has been no evidence that supports a claim for off-site contamination.  The landfill remains in a managed state.”