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coal mining preparation powerpoint

coal mining preparation powerpoint

Coal Mining Transcript West Virginia ranks 3rd in USA for coal production and 4th in proven reserves mines are gaseous and dangerous many explosions hundreds of miners killed from explosions 65 tons of rock come down when mines cave in no job more dangerious than coal mining 1300 miners were killed in 1913 •world war to united people •coal miners refused to work •the government was

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