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above: Limestone quarry, Glenwood. Plate IX U.S. Geological Survey (USGS) Bessemer-Vandiver Folio, 1927. Courtesy Thomas Denny.
left: Limestone quarry, Cliff Road Alley. Louise McPhillips, 2019.
below: Iron ore quarry, Helen-Bess Mine, USGS Bulletin 400, 1910. BPL Southern History.
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