Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

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Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

Sinkholes northwest corner of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkhole target pattern

Subject	Sinkholes
Creator	Bolles, William H.
Date	1971-03-16

Sinking Creek above Potters Mills

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Site of Ole Bull's Castle

Subject	Geomorphology
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date

Site of Washington's first fight


Subject	Stratigraphy Sedimentation
Creator	Willard, Bradford, 1894-

Site of Washington's first fight

Subject	Stratigraphy
Creator	Willard, Bradford, 1894-
Date	1933-08-01

Site of William Penn Cavern

Subject	Caves
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Six yard shovel, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Six yard shovel loading limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Six yard shovel stripping limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slab showing beach mud flow surface

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slabs of slate used for fence posts

Subject	Igneous and Metamorphic
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slag pile

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Slate fence posts

Subject	Cities, Towns, and Buildings
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slateford Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slate granules plant of Blue Mountain Stone Company

Subject	Economic Uses
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate grinding plant

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slate grinding plant

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slate handling in yard

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, abandoned, R. L. Jones

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry and cable ways

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry cable frames

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, channel cut and blasted wall

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, from signal house Albion Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, lowering men

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry of Amalgamated Slate Quarries Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry of Amalgamated Slate Quarries Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry (old)

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, showing depth

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate quarry, surface works Albion Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate saw, Albion Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate sawing

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste at quarries

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste dump compared with homes

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste dumps

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate wastepile and shanties

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slate waste recovered for granules

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slicken sided face in limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slickensided face T at right angles to contour of hill

Subject	Structure-Faults
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date

Slide on Route 322 near Cornwall

Subject	Landslides
Creator	Bolles, William H.
Date	1970

Slide tension crack in the Birmingham shale near the top of the hill I-279

Subject	Landslides
Creator	Craft, Jesse L.

Slip face and clay gouge, Wood Chromite Mine

Subject	Mineralogy
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date

Slip face and slide block

Subject	Landslides
Creator	Craft, Jesse L.