The Glass, Molders, Pottery, Plastics and Allied Workers International Union (GMPIU) was a
labor union representing craft and industrial workers primarily in the ceramics,
china, craft metals, fiberglass, glass, insulation, and pottery industries, in the United States and Canada.
With the Coopers merger, the GMPIU had about 80,000 members in the United States and Canada in about 435 locals.[3] As of 1993, the GMP had 35 staff working at its headquarters.[3]
Job losses continued. As of 2009, the union had just 30,392 members.[6] The
Great Recession cut heavily into its membership, and by the end of 2012 it had just under 28,000 members.[1] In 2016, the union agreed to merge into the
United Steelworkers.[7] The merger was completed on January 1, 2018, and the union became the GMP Council of the Steelworkers.[8]
^President Hatfield resigned at the union's Executive Board meeting after serving only two years of a four-year term.
^President Carter served out the remainder of President Hatfield's term of office, and declined to run for election to a full term.
^President Rankin assumed office on October 1, 1997. He won re-election in 2001, but did not serve out his full term. He stepped down as president in June 2004.