ON HIS LAST day of employment, John “Wurkin Durkin” Durkin unhooked the final lift for an SCR project at the Exxon/Mobil refinery in Billings, Mont. A member of Local 11 (Helena, Mont.) since 1978, Durkin began his apprenticeship in 1976 and moved into field construction in 1980. He retired June 30, 2008.