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The Sheet Metal Workers' International Association (SMWIA) was a trade union of skilled metal workers who perform architectural sheet metal work, fabricate and install heating and air conditioning work, shipbuilding, appliance construction, heater and boiler construction, precision and specialty parts manufacture, and a variety of other jobs involving sheet metal.
Now representing 75 percent of the US and Canada's skilled sheet metal work force, or about 26,000 members in 1924, the IA was ready to adopt what one member called a "more up-to-date, progressive name" – The Sheet Metal Workers' International Association.
International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers; International Association of Fire Fighters; International Association of Heat and Frost Insulators and Allied Workers; International Association of Machinists and Aerospace Workers; International Association of Sheet Metal, Air, Rail and Transportation Workers
The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers is a union in the United States and Canada, which represents, trains and protects [2] primarily construction workers, as well as shipbuilding and metal fabrication employees.
National Union of Sheet Metal Workers, Coppersmiths, Heating and Domestic Engineers; S. Sheet Metal Workers' International Association; Swedish Sheet Metal Workers' Union
The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members [1] in 103 chapters [2] throughout the United States, Canada, Australia and Brazil.
Sheet metal workers' trade unions (10 P) Steel industry trade unions (4 C, 2 P) U. ... Metal Production and Manufacturing Workers' Union; Metal Trades Department, AFL ...
General secretaries of the National Union of Sheet Metal Workers, Coppersmiths, Heating and Domestic Engineers (5 P) S. Sheet metal workers' trade unions (10 P)