 Hoffman also built power plants in the 1970s, such as most of the Trojan Nuclear Power Plant in Oregon, parts of the Washington Public Power Supply System’s nuclear plants at Hanford, and part of the Boardman Coal Plant in Eastern Oregon.Also in Eastern Oregon, they built the largest cement plant in the Pacific Northwest at Durkee starting in 1978.At the end of the decade, Hoffman finished the Sixteen Hundred Bell Plaza tower in 1977 and then finished One Union Square and the Westin Building both in 1981, all in Seattle.