AS42: Repair of welds was one of the activities under way during the reporting period. Here a "bell hole" has been excavated to enable crew to make a new radiograph--or x-ray--of the pipe weld., 1976-05, PCA0002-1b-28, Folder: PCA0002-1b. 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/17366 Accessed May 23, 2025.