Eighty percent of the world's total coal reserves (estimated at 929 billion tons) are located in the United States, Russia, China, Eurasia, and Australia. Most coal-producing nations use the bulk of their stores at home, but 17 percent of the world's coal is exported, largely by sea. Marketing the raw material of global warming is big business.
http://www.sierraclub.org/sierra/201005/coalmap.aspx