Dan Cohn Dan Cohn is an energy analyst who has worked on regulatory, legal, and economic aspects of the Powder River Basin coal mining industry for seven years. He is based in Billings, Montana. Dan's Articles Planning For Coal Mine Closures In the Powder River Basin New analytical model reveals which remaining mines and communities are most at risk from unplanned shutdowns. May 11, 2021 May 11, 2021 Dan Cohn https://www.sightline.org/profile/dancohn/