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Confederate Niter Production
http://www.caves.org/pub/journal/PDF/V43/v43n4-Powers.htm
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Confederate Salt Works
http://www.bayhistory.org/Salt_Works.htm
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Confederate Saltpeter Mining in Northern Alabama
http://www.caves.org/pub/journal/PDF/V43/v43n4-Smith.htm
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Geological Surveys Before the Civil War
http://pubs.usgs.gov/circular/c1050/before.htm
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Geology and the Civil War
http://www.uky.edu/ArtsSciences/Geology/webdogs/civilwar/
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Geology of the Civil War Battle of Chickamauga
http://gsa.confex.com/gsa/2002NC/finalprogram/abstract_32291.htm
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Geology and the Gettysburg Campaign of 1863
http://www.oswego.edu/Acad_Dept/a_and_s/earth.sci/geo_geochem/geol/gettysburg.html
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History of West Virginia Coal Industry
http://www.wvgs.wvnet.edu/www/geology/geoldvco.htm
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Saltville, Southwestern Virginia Civil War Era Production Facility
http://gsa.confex.com/gsa/2002NC/finalprogram/abstract_31067.htm
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San Francisco Gold Rush Chronology (1862-1865)
http://www.sfmuseum.org/hist/chron6.html
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Viewing the Civil War Through a Geological Window
http://crm.cr.nps.gov/archive/25-04/25-04-6.pdf
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