"Homestake dam, some 2nd shift personnel. Left to right: Duane--end dump skinner; Jack Treptow--Shift Supervisor; Chad Bane--Dozer Hand; Kelly Stone Bissell--General Quarry Foreman, Fall of 1966." Morrison-Knudsen Company, Inc. (MK) was the construction company that did the work under the supervision of Bechtel Corporation, which provided the engineers and construction managers for the project.