Today we lost 1.8 million acres. The solid red area is 3 new National Monuments signed into law by executive order. Bypassing the meesly 7% support in congress, it was made law under the Antiquities Act.
No prospecting at all. Can't even pick up a rock.
Below is with the current Wilderness areas in green. At least you can prospect, but no vehicles, motorized equipment or metal detectors in Wilderness areas.