Radioactive waste is a common by-product of oil and gas drilling. On Friday, workers in North Dakota were cleaning up a pile of illegally dumped waste filters.
Up to 100 filter socks were found in Williston, a North Dakota oil and gas boomtown in the western part of the state. Filter socks are the nets that strain out the sludge, which is sometimes radioactive, that is a by-product of oil production. Dale Patrick from North Dakota’s Department of Public Health said that although the dumping was illegal, there was little threat to the public.