Operative Plasterers and Cement Masons International Association of the United States and

About This Association

>>>> For A More Complete History, CLICK HERE The Operative Plasterers' and Cement Masons' International Association (OPCMIA) of the United States and Canada is a labor union that represents plasterers and cement masons in the construction industry in North America. As the oldest Building and Construction Trades Union in the United States, the organization traces its roots back to 1864, during the American Civil War, when an organization known variously as the National Plasterer's Union or the National Plasterers Organization began to unify the various local craft unions that represented workers in the trade

Publications

Conventions

Specialties:

1. Masons

Information Summary