Source: Bismarck Tribune

Dakota Salts, a subsidiary of an Australian mining company, is exploring potash in Burke County, North Dakota. The company believes 50 billion tons of potash can be extracted from the site. Rising prices for potash have encouraged new exploration.

North Dakota's reserves are deeper below ground than potash found in Canada's Williston Basin. But Dakota Salts plans to use a method called solution mining, which forces potash to the surface through a hole drilled into the ground.

Original press release