EUREKA, Nev. (AP) — Conservationists are trying to put the brakes on plans to mine hundreds of millions of pounds of the metallic element molybdenum from an open pit mine in north-central Nevada.

The Reno-based Great Basin Resource Watch has asked the U.S. Bureau of Land Management to rescind the final environmental impact statement it issued last month when it approved the final record of decision for the Mt. Hope project in Eureka County.