A lawsuit accuses a tannery of contaminating farmland with a chemical that caused brain-tumors in residents of a Missouri town.  The tannery is alleged to have used hexavalent chromium to remove hair from hides, and then providing the resulting waste product to area farmers to use as fertilizer. The lawsuit claims thousands of tons of sludge containing the chemical was applied on farm ground in nearby counties so the tannery could avoid paying for disposing of it in a landfill.