Overburden Mineralogy as Related to Ground-water Chemical Changes in Coal Strip Mining PDF Download
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Author: Arthur Hounslow
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 324
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Author: Arthur Hounslow
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 324
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Author: United States. Environmental Protection Agency. Office of Research and Development
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: U. S. Environmental Protection Agency
Publisher: BiblioGov
ISBN: 9781289198596
Category :
Languages : en
Pages : 322
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Book Description
The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Author: Engineering Enterprises
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 146
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Author: David W. Clark
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 92
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A potential hydrologic effect of surface mining of coal in southeastern Montana is a change in the quality of ground water. Dissolved-solids concen- trations in water in spoils aquifers generally are larger than concentrations in water in the coal aquifers they replaced; however, laboratory experiments have indicated that concentrations can decrease if ground water flows from coal-mine spoils to coal. This study was conducted to determine if decreases in concentrations occur onsite and, if so, which geochemical processes caused the decreases. Solid-phase core samples of spoils, unmined over- burden, and coal, and ground-water samples were collected from 16 observation wells at two mine areas. In the Big Sky Mine area, changes in ground- water chemistry along a flow path from an upgradient coal aquifer to a spoils aquifer probably were a result of dedolomitization. Dissolved-solids concentrations were unchanged as water flowed from a spoils aquifer to a downgradient coal aquifer. In the West Decker Mine area, dissolved-solids concentrations apparently decreased from about 4,100 to 2,100 milligrams per liter as water moved along an inferred flow path from a spoils aquifer to a downgradient coal aquifer. Geochemical models were used to analyze changes in water chemistry on the basis of results of solid-phase and aqueous geochemical characteristics. Geochemical processes postulated to result in the apparent decrease in dissolved-solids concentrations along this inferred flow path include bacterial reduction of sulfate, reverse cation exchange within the coal, and precipitation of carbonate and iron-sulfide minerals.
Author: Nancy E. Driver
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 104
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Author:
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 200
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Author:
Publisher:
ISBN:
Category : Geological surveys
Languages : en
Pages : 104
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 356
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 332
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