This minor group comprises technical occupations in civil, mechanical and industrial engineering; including civil engineering technologists and technicians; mechanical engineering technologists and technicians; industrial engineering and manufacturing technologists and technicians; and construction estimators. They are employed by public works, transportation and other government departments; consulting engineering, insurance, manufacturing, processing and residential, commercial and industrial construction companies; major electrical, mechanical and trade contractors; and in many other industries; or they may be self-employed.