AS27: For special buried pipe, six-inch diameter brine lines on either side of the pipe circulate a refrigerant, keeping the soil frozen around the buried pipe., 1976-05, PCA0002-1b-34, 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/17372 Accessed February 22, 2025.