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Interior of filling culvert in west wall of Lock 1, during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of the interior of the filling culvert in the west wall of Lock 1, during fourth Welland Canal construction, c. 1920. Size is 14 ft. x 16 1/2 ft. From the booklet "Welland Ship Canal (Under Construction)" by the…
Lock 2 during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of Lock 2 during fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.
West wall of Lock 1 during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of the west wall of Lock 1 during fourth Welland Canal construction, c. 1920. 34 feet yet to be built is shown as a dotted illustration. From the booklet "Welland Ship Canal (Under Construction)" by the Department…
Reinforced concrete entrance wall at Lock 1 being backfilled, during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of a reinforced concrete entrance wall at Lock 1 being backfilled, during fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and…
Reinforced retaining wall on a pile foundation, during fourth Welland Canal construction, c. 1920
Black and white halftone photograph showing a reinforced retaining wall on a pile foundation, during fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.
Building an earth dam around the concrete core-wall, during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of workers building an earth dam around the concrete core-wall, during fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and…
Channelling sides of the rock cutting during fourth Welland Canal construction, c. 1920
Black and white halftone photograph of workers channelling sides of the rock cutting during the fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.
Heavy rock cutting on site of Flight Locks, Section No. 3 for fourth Welland Canal construction, c. 1920
Black and white halftone photograph showing heavy rock cutting on site of Flight Locks, Section No. 3 for fourth Welland Canal construction, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.
Hydraulic Suction Dredge "Primrose" working on the fourth Welland Canal, c. 1920
Black and white halftone photograph of the Hydraulic Suction Dredge "Primrose" working on the fourth Welland Canal, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.
Reclaiming land with excavated material during construction on the Welland Canal, Section No. 5, c. 1920
Black and white halftone photograph of land being reclaimed with excavated material during construction on the Welland Canal, Section No. 5, c. 1920. From the booklet "Welland Ship Canal (Under Construction)" by the Department of Railways and Canals.