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Mining and crushing methods and costs at Monocacy quarry of John T. Dyer Quarry Company, Monocacy, Pa
Record is based on bibliographic data in ProQuest U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from ProQuest, LLC.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2012. digital, PDF file. ProQuest U.S. Executive Branch Documents, 1910-1932. Mode of access: World Wide Web via ProQuest website.
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Mining and crushing methods and costs at Monocacy quarry of John T. Dyer Quarry Co., Monocacy, Pa