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An Environmentally Sound Peat Harvesting Technique.

Johnson-BV; Connor-K; Swan-SA
Pres At 52D Ann Mtg Minnesota Section 40th Ann AIME Symp Duluth Minnesota, 1/10-13/79 :15 pages
The realization of peat as a major energy source in the United States depends upon suitable harvesting and dewatering techniques and environmental controls. European technology regarding peat storage and combustion may have potential application in the United States, and is presently under study. The predominant harvesting method in Europe is the milled peat method, but with this method, it is estimated that large areas of land, up to 400 square miles, would have to be drained and devegetated for nearly 25 years to fuel proposed peat-fired plants. Major environmental problems would be encountered that probably would be insurmountable. For this reason, alternatives to the milled peat process have received preliminary investigation by the Bureau of Mines. A hypothetical single-pass peat-harvesting system currently under investigation would have the advantages of faster startup and reclamation, and would require about 5 percent of the annual land use as opposed to the milled peat process. The entire depth of peat would be harvested in one pass, and fast dewatering and reclamation techniques could be used. A single-pass system could consist of a hydraulic dredge, a pipeline, and a dewatering station. A preliminary economic analysis estimates that fuel peat could be obtained for an onsite cost of approximately $1 per million btu.
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OP 58-79
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Pres. At 52D Ann. Mtg, Minnesota Section, 40th Ann. AIME Symp., Duluth, Minnesota, 1/10-13/79