ocr: The USA has an abundance of natural resources, including oil, although the country is a net oil importer. There are massive deposits of coal in the western states - where almost all mining is open-pit - and substantial mineral deposits in the mountains and intramontane basins. Environmental concerns have prevented the development ofnew sources ofI nuclear power since the accident at Ihree Mile Island in 1979. Environmentalism has also torced the timber industry to retreat from the Pacitic Northwest, especially from Washington State. It has movedto the south, where great stands of pine are harv ...
