Construction activity during the reporting period include pipe work in the Atigun Pass area of the Brooks Mountain Range. The 4,800-foot-high pass is the highest elevation on the route. The above-ground section is south of Chandalar camp, about 15 miles south of the pass summit., 1976-07, PCA0002-2a-28, Folder: PCA0002-2a. 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/17447 Accessed February 22, 2025.