Installed by a specially-designed device called a manipulator, the insulation will keep the warm oil from getting too cold and sluggish should the system be shut down for a lengthy period during winter., 1977-01, PCA0002-4a-24, Folder: PCA0002-4a. 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/17735 Accessed February 22, 2025.