Our proud tradition of leading the Union and our communities towards a better future continues. – Mobile Crane Operators Group (12 counties) Validity dates: 1 July 2016 – 30 June 2019. . Click here to view the OE Local 12 Subsistence & Zone Area Map – Exhibit A&B. Inspired by our commitment to Brotherhood, we are introducing a new look for the SWRCC. . – Hydro-Vac Effective dates: September 1, 2019 – August 31, 2020. . . .