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William Greenough Platt
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Report of Progress in the Cambria and Somerset District of the Bituminous Coal-fields of Western Pennsylvania
Franklin Platt, William Greenough Platt, Geological Survey of Pennsylvania, Pennsylvania. Board of Commissioners for the Second Geological Survey · Yayınevi bilinmiyor
348 sayfa · 1878
Coal mines and mining
Report of Progress in the Cambria and Somerset Districts of the Bituminous Coal-fields of Western Pennsylvania
Franklin Platt, William Greenough Platt · Yayınevi bilinmiyor
Sayfa sayısı yok · 1877
Coal mines and mining
Prospectus of the Elk Run Coal and Iron Company
Elk Run Coal and Iron Company, Franklin Platt, William Greenough Platt, Joseph Pool · Yayınevi bilinmiyor
8 sayfa · 1882*
Coal mines and mining
Report of Progress in the Cambria and Somerset Districts of the Bituminous Coal-fields of Western Pennsylvania: Plate XVIIIa. A geological map of the Salisbury Central Coal Basin in Somerset County, Pa. showing the underground shape of the Pittsburgh Bed by 10 foot contour lines on the floor of the bed, referred to ocean level in Rariton Bay, N.Y.
Franklin Platt, William Greenough Platt · Yayınevi bilinmiyor
Sayfa sayısı yok · 1877
Coal mines and mining
Report of Progress in the Cambria and Somerset Districts of the Bituminous Coal-fields of Western Pennsylvania: Plate VIII. Copy of a map of the Bell's Gap Coal Field on the summit of the Allegheny Mountain in Cambria Co., Penna
Franklin Platt, William Greenough Platt · Yayınevi bilinmiyor
Sayfa sayısı yok · 1877
Coal mines and mining