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2. Sheet Metal and Air Conditioning Contractors' National ...

   en.wikipedia.org/wiki/Sheet_Metal_and_Air...

   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.

3. International Association of Sheet Metal, Air, Rail and ...

   en.wikipedia.org/wiki/International_Association...

   As national contractors gained prominence by the mid-20th century, that relationship changed with the times: With the rise of the Sheet Metal and Air Conditioning Contractors National Association – or SMACNA – in the 1940s, the national contractors group and the SMWIA agreed that "proper labor relations" would insure prosperity for all.

4. Sheet Metal Workers' International Association - Wikipedia

   en.wikipedia.org/wiki/Sheet_Metal_Workers...

   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.

5. National Union of Sheet Metal Workers, Coppersmiths, Heating ...

   en.wikipedia.org/wiki/National_Union_of_Sheet...

   The last independent union for sheet metal workers, the Birmingham and Midland Sheet Metal Workers' Society, finally merged into the union in 1973. [ 4 ] The union approved an offer to join the Amalgamated Union of Engineering Workers ' Engineering Section in 1979, [ 1 ] but this did not go ahead and instead, in 1983, it merged into the ...

6. Mesker Brothers - Wikipedia

   en.wikipedia.org/wiki/Mesker_Brothers

   Photograph of Frank Mesker. The Mesker Brothers Iron Works and George L. Mesker & Co. were competing manufacturers and designers of ornamental sheet-metal facades and cast iron storefront components from the 1880s through the mid-twentieth century.

7. Category:Sheet metal workers' trade unions - Wikipedia

   en.wikipedia.org/wiki/Category:Sheet_metal...

   This category contains trade unions representing metalworkers in the sheet metal working trades or crafts, including coppersmiths, tinsmiths and braziers. Pages in category "Sheet metal workers' trade unions"