Affiliates of Blackriver LLC retained Eagle River Energy Advisors LLC  for the sale of certain mineral interest assets and associated development rights in the D-J, Appalachian, Powder River and Anadarko basins.  Hart Energy Staff https://www.hartenergy.com/exclusives/marketed-blackriver-mineral-interest-across-d-j-appalachian-powder-river-anadarko-basins Fri, 10/29/2021 – 11:05 AM Eagle River Energy Advisors LLC has been exclusively retained by [...]