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The Standard Industrial Classification (SIC) is a system for classifying industries by a four-digit code as a method of standardizing industry classification for statistical purposes across agencies. Established in the United States in 1937, it is used by government agencies to classify industry areas.
The International Standard Industrial Classification of All Economic Activities (ISIC) is a United Nations industry classification system. Wide use has been made of ISIC in classifying data according to kind of economic activity in the fields of employment and health data.
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 product of a merger between the Sheet Metal Workers’ International Association (SMWIA) and the United Transportation Union (UTU), SMART represents over 210,000 sheet metal workers, service technicians, bus operators, engineers, conductors, sign workers, welders, and production employees, among others, throughout the United States, Puerto ...
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.
Updated periodically, the DOT provided useful occupational information for many years. But its usefulness waned as the economy shifted toward an information and services and away from heavy industry." [1] The last update to job descriptions was in 1991. [5] During the 1990s, the hard-copy book format of the DOT was discarded.
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Classification is based on an evaluation of four transportation characteristics: density, stowability, handling and risk or liability. Together, these characteristics establish a commodity's "transportability." [2]