About Our Industries | OPCMIA | Plasterers' and Cement Masons'

OPCMIA members place and finish concrete in a wide range of uses. The use of this rock solid material requires a well trained and skilled workforce. Famous concrete structures include the Hoover Dam, the Panama Canal, and the Roman Pantheon. Concrete and its related products are all around you and are often taken for granted. Today, it is the most widely used human-made material (measured by tonnage). It is the foundation of your home or office, it is used to make the sidewalks and roads that transport you, and it lends its strength and versatility to build dams and power plants to light your way.