Hydraulic Mine Filling: Its Use in the Pennsylvania Anthracite Fields, A Preliminary Report
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Hydraulic Mine Filling: Its Use in the Pennsylvania Anthracite Fields, A Preliminary Report, report, April 1913; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc38737/: accessed September 9, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.
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