In the Powder River Basin, which straddles Wyoming and Montana, hundreds of millions of tons of coal are mined each year. About 40 percent of the nation's coal comes from this region. Read more at EarthFix about proposals to bring this coal through Pacific Northwest on to Asia at

In this aerial tour, we'll see some of the largest open surface coal mines in the world.

Videography by Katie Campbell
Aerial support provided by Chris Boyer of LightHawk

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