The line was more than 60 per cent complete in early April. Here, a ditching machine cuts through the snow and frozen ground to make the ditch for the fuel line., 1977-04, PCA0002-4b-6, Folder: PCA0002-4b. 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/17798 Accessed February 22, 2025.