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Triplex Coal Co.
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YearOperation NameNumberTypeOpeningDistrictCityCountyCompany NameRailroad Shipments (tons)Railroad to MineTruck Shipments (tons)Total Production (tons)Days WorkedEmployeesNotes
1929 Northwest Colliery1Simpson 1LackawannaTriplex Coal Co.486Erie06861584Leased from Temple Coal Co.

Note 1: Added, does not appear in the mine inspection report.