Строительство Панамского канала, 1910 г.

Building the Panama Canal. Looking up the canal from the Pacific side. Ship in port. Steam shovels working. Digging and depositing loads on train. Carrying dynamite in boxes on heads of local workers and black workers - immigrants from the West Indies? Small blast. The unloader, train which shovels rubble onto canal side. The spreader leveling the dirt, an adaptation on the train. The track shifter, train picks up track and move it a few yards to the side. Concrete mixing plant. Loading steam trai