In 2010, there was some excitement in parts of North Dakota about “potash,” or "potassium salts.”
Potash is a fertilizer. It’s mined just across the border, in Saskatchewan.
"We've got those same deposits," said state geologist Ed Murphy.
Murphy said the state used to get a lot of inquiries from around the world about North Dakota’s potash deposits. But that slowed down a lot, when the price dropped. Now, Murphy says there have recently been a few inquiries.