BISMARCK, N.D. (AP) — Officials in a western North Dakota county are asking for more information about a mobile oilfield waste treatment plant that's proposed in the Bakken formation.

The North Dakota Department of Health will hold a public hearing Thursday to discuss White Wing Limited's application for a radioactive materials license, The Bismarck Tribune reported .

White Wing Limited is proposing to process, filter and separate oilfield waste with naturally occurring radioactive material. The company doesn't plan to collect or store oilfield waste, but would immediately dispose it at a spec...