Lecture 16 - Energy Resources part 2

Lecture 16 - Energy Resources part 2 - Coal Mining Strip...

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Strip Mining Coal Mining
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Strip mine, Mercer County, ND Coal Mining
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Contour Strip Mining Coal Mining
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Coal Mining
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Sinkholes formed over underground coal mine, Sheridan County, WY Coal Mining
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Disadvantages of Coal Strip mining is cheapest, but requires reclamation Underground mining leads to subsidence Transporting coal is difficult trains convert to electricity on site coal slurry in pipelines convert to synthetic oil or gas Ash left after burning ~5-20% of original volume As sulfides in coal oxidize (exposure to air or burning), they form sulfuric acid acid rain
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Breathing problems for children, asthmatic adults Damage to buildings and monuments (especially marble) Acid Rain 1908 1969
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Acid Rain Pure water: neutral pH of 7 Pure rain: pH of 5.6 (carbon dioxide in air) Automobile battery acid: pH of 1 Vinegar: pH of 3 Coca-cola: pH of 3.5 Acid rain: pH of 1.5 to 5.6 Forms from sulfur dioxide and nitrous oxide Sulfur dioxide mostly from coal-burning power plants Nitrous oxide from power plants, cars and trucks
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Acid Rain
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This note was uploaded on 02/02/2010 for the course GEO 101 taught by Professor Hanson during the Fall '08 term at SUNY Stony Brook.

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Lecture 16 - Energy Resources part 2 - Coal Mining Strip...

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