Footage of construction crew and supervisors building a wood stave penstock at a power station. A penstock is a sluice or gate or intake structure that controls water flow, or a...

Pan of a long power production building, seen through transmission lines, transformers and water pipes, to three large water tanks. CUs of the various outdoor parts of the powe...

Title on box: "Wyman #1 construction movies. Reel #2. First construction. Cousins Island and electrical installation. 1957" Aerial footage of the power installation at Cousins...

Intertitle: "Central Maine Power Co. lays submarine cable across mouth of Kennebec River to Popham Beach, June 7, 1938." Intertitle: " Cable manufactured by Simplex Wire & Cabl...