Here, a section of pipe 80-feet long and weighing 10 tons is being lowered down the slope on the aerial tram with instructions being relayed by radio to the tram system operator., 1976-11, PCA0002-3b-13, Folder: PCA0002-3b. Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977, PCA 2. Alaska State Library - Historical Collections Finding Aids. https://alaska.libraryhost.com/repositories/2/archival_objects/17643 Accessed May 23, 2025.