Construction methods and Long Lake dam--Dry Coulee Siphon, 1948-09-28 Construction methods and Long Lake dam--Long Lake Dam, 1949-04-06 Construction methods and Long Lake dam--Long Lake Dam headworks, 1949-09-28 Construction methods and Long Lake dam--Long Lake Headworks during concrete placing, 1949-09-28 Construction methods and Long Lake dam--Long Lake Headworks during concrete placing, 1949-11-28 Construction methods and Long Lake dam--aerial view of O'Sullivan dam, 1950-05-31 Construction methods and Long Lake dam--backfill work, 1950-03-28 Construction methods and Long Lake dam--bending reinforcement bars, 1947-05-26 Construction methods and Long Lake dam--broken rock siphon, 1950-05-31 Construction methods and Long Lake dam--bulldozer pushing material into position, 1950-03-21 Construction methods and Long Lake dam--completed Long Lake Dam, 1949-10-11 Construction methods and Long Lake dam--construction of bins and rescreening plant, 1950-03-21 Construction methods and Long Lake dam--days after construction begins on Long Lake Dam, 1947-05-14 Construction methods and Long Lake dam--defective concrete, 1950-10-31 Construction methods and Long Lake dam--defective concrete, 1950-10-31 Construction methods and Long Lake dam--excavation for the left berm of the open outlet transition, 1950-03-31 Construction methods and Long Lake dam--flash-pressure welding machine, 1947-05-22 Construction methods and Long Lake dam--gravel dumping and conveyor belt, 1948-09-08 Construction methods and Long Lake dam--inspecing the canal lining, 1948-10-05 Construction methods and Long Lake dam--inspecing the moisture of lining concrete, 1948-05-24 Construction methods and Long Lake dam--laying concrete for Long Lake Dam, 1949-09-28 Construction methods and Long Lake dam--man stands in concrete chute, 1950-11-09 Construction methods and Long Lake dam--men compact backfill, 1949-05-25 Construction methods and Long Lake dam--mobile laboratory, 1948-09-08 Construction methods and Long Lake dam--open outlet transition of Dry Coulee Siphon, 1948-09-24 Construction methods and Long Lake dam--placing concrete and steel in canal lining, 1950-04-04 Construction methods and Long Lake dam--reinforcing steel for Weber Wasteway, 1950-09-22 Construction methods and Long Lake dam--rock pockets, 1950-09-22 Construction methods and Long Lake dam--rock pockets and exposed reinforcing steel, 1950-09-22 Construction methods and Long Lake dam--rooter pulled by tractor through cemented gravel, 1949-05-20 Construction methods and Long Lake dam--test weld, 1947-05-22 Construction methods and Long Lake dam--use of smaller tractors, 1950-03-24 Construction methods and Long Lake dam--weighing equipment, 1948-09-08 Construction methods and Long Lake dam--workman unloading bulk cement, 1948-09-08

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