Here are the relevant materials in United States v. Fowler (D. Mont.):
Here is the complaint in Indigenous Environmental Network v. Bureau of Land Management (D. Mont.):
Here are the updated materials in the case now captioned Rosebud Sioux Tribe v. Trump (D. Mont.):
Prior post here.
Here are the new materials in Big Horn County Elec. Coop. v. Big Man (D. Mont.):
Prior post with additional briefing here.
Here is the complaint in Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation v. Dept. of the Interior (D. Mont.):
Here is the complaint in Sxʷnq̓ʔels l Suw̓ečm / Ksukⱡiⱡmumaⱡ ʾA·kጦaⱡmukwaʾits d/b/a Energy Keepers Inc. v. Hyperblock LLC (D. Mont.):
Lower court materials here.