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

Sinkholes northeast corner at intersection of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

Sinkholes northeast corner at intersection of Routes 422 and 39

Creator	Geyer, Alan R.
Date	1972

Sinkholes northeast corner of Routes 422 and 39

Subject	Sinkholes
Creator	Geyer, Alan R.
Date	1972

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	1925-07-16

Site of Ole Bull's Castle

Subject	Geomorphology
Creator	Shaffner, Marchant N. (Marchant Nissley), 1897-1990
Date	1931-08-01

Site of Washington's first fight

Date
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	1933-10-05

Six yard shovel, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Six yard shovel loading limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Six yard shovel stripping limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Slab showing beach mud flow surface

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-07-31

Slabs of slate used for fence posts

Subject	Igneous and Metamorphic
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1924-08-01

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	1927-09-27

Slateford Creek

Subject	Rivers and Streams
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1930-04-01

Slate granules plant of Blue Mountain Stone Company

Subject	Economic Uses
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1927-06-15

Slate grinding plant

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-06-04

Slate grinding plant

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-06-04

Slate handling in yard

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-03

Slate quarry

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-10

Slate quarry

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-10

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate quarry

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-03

Slate quarry, abandoned, R. L. Jones

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-31

Slate quarry and cable ways

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate quarry cable frames

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate quarry, channel cut and blasted wall

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-07-18

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	1922-08-05

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	1922-08-31

Slate quarry, showing depth

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-07-18

Slate quarry, surface works Albion Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate saw, Albion Company

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate sawing

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-03

Slate waste

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1923-07-18

Slate waste

Subject	Igneous and Metamorphic
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1929-05-10

Slate waste at quarries

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate waste dump compared with homes

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate waste dumps

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-05

Slate wastepile and shanties

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1931-11-06

Slate waste recovered for granules

Subject	Nonmetallic Mineral Resources
Creator	Stone, Ralph W. (Ralph Walter), 1876-1964
Date	1922-08-31

Slicken sided face in limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Slickensided face T at right angles to contour of hill

Subject	Structure-Faults
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1933-01-05

Slide on Route 322 near Cornwall

Subject	Landslides
Creator	Bolles, William H.
Date	1970