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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.
The Georgia Gold Rush was the second significant gold rush in the United States and the first in Georgia, and overshadowed the previous rush in North Carolina.It started in 1829 in present-day Lumpkin County near the county seat, Dahlonega, and soon spread through the North Georgia mountains, following the Georgia Gold Belt.
In 1860, free blacks made up less than 1% of Georgia's black population, and the majority of them were poor. James Boisclair was a rare example of a black man in the Antebellum -era Georgia who was able to prosper economically in spite of harsh legal repression he had to work around.
The Free Jim Mine was a Georgia Gold Rush gold mine located in the town of Dahlonega in Lumpkin County, Georgia, United States. The mine was started by a free African American named James Boisclair, who arrived in the area in the 1830s from Augusta, Georgia. Apparently, Boisclair discovered gold on a tract of land but, under state law, could ...
hemming process A closed hem A seam. Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself. Hemming is the process in which the edge is rolled flush to itself, while a seam joins the edges of two materials.
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.
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.
Raising is a metalworking technique whereby sheet metal is formed over a solid object by repeated "courses" of hammering and annealing. A sheet metal worker is often required to raise, or bump, the work into form from the flat metal by means of a raising hammer and raising block. The raising block is made from substance giving resistance to the ...