GENERAL CONTRACTORS--INDUSTRIAL BUILDINGS AND WAREHOUSES (Industry 1541) Establishments classified in this industry are primarily engaged in the construction of industrial buildings such as plants, factories, and warehouses whether industrial or commercial. This includes new work, reconstruction, and maintenance and repair. Establishments primarily engaged in the construction of industrial nonbuilding structures (blast furnaces, petroleum refineries, etc.) are classified in SIC 1629, Heavy Construction, Not Elsewhere Classified. For additional examples, refer to the Standard Industrial Classification Manual: 1987 (SIC) published by the Office of Management and Budget, Executive Office of the President. During 1992, the establishments with paid employees classified in this industry accounted for $21.0 billion in total dollar value of business. Of this amount, $20.6 billion were for the value of construction work. These establishments paid out $4.8 billion for materials, components, and supplies and $9.6 billion for construction work subcontracted to others. Costs for selected power, fuels, and lubricants for the industry were $159 million. Value added for 1992 was $6.4 billion. There were 7,963 establishments with total employment averaging 122,970 during the year. Total payroll for 1992 was $3.5 billion. Larger establishments with 20 employees or more, while representing only 17 percent of the total number of employer establishments in this industry accounted for 74 percent of all business done.