Peter, I just read this today. A prospector's opportunity in Utah:

Starting at 6 a.m. on Feb. 2 2018 – the moment Pres. Trump’s proclamation reducing the size of the Bears Ears and Grand Staircase-Escalante National Monuments takes effect – private citizens and companies will be allowed to stake claims for hard rock mining in a process governed by the General Mining Law of 1872, according to the U.S. Bureau of Land Management. The process for staking a claim remains much as it did during the Gold Rush: A prospector hammers four poles into the ground corresponding to the four points of a parcel that can be as big as 20 acres, and attaches a written description of the claim onto one of them.