Nov 8, 2014 · The Powder River Basin coal boom started in the 1970s. The biggest mine by production volume, Black Thunder, opened in 1977. The company town of ...
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Powder River is a tributary of the Yellowstone River, approximately 375 miles (604 km) long in northeastern Wyoming and southeastern Montana in the United ...
The Battle of Powder River, also known as the Reynolds Battle, occurred on March 17, 1876, in Montana Territory, United States, as part of the Big Horn ...
After the Powder enters Montana from its beginnings in northeast Wyoming, it covers 150 air miles (its twists and turns probably triple the surface distance) ...
Nov 8, 2014 · The discovery of gold in the Black Hills of Dakota and Wyoming territories in 1874 by Lt. Col. George Armstrong Custer's expedition and the ...
A Geological History of the Powder River Basin | - Williams Sites
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Jun 5, 2013 · The Powder River Basin was formed when the Bighorn mountains and Black Hills created by the Laramide Orogeny spread away from each other, ...
The Powder River is a 375 mile long tributary of the Yellowstone River located in northeastern Wyoming. It drains an area historically known as the Powder River ...
The Powder River War was a military campaign was ordered by Major General Grenville M. Dodge as a punitive operation against the Sioux, Cheyenne and ...
From its source in central Wyoming to its union with the Yellowstone River, the Powder River is 250 miles long, "a mile wide and an inch deep; to thick to ...
The Powder River Basin is a structural and topographic basin occu- pying an area of about 20,000 square miles in northeastern Wyoming and southeastern Montana, ...