Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Other Building Equipment Contractors,

Bolt, Nut, Screw, Rivet, and Washer Manufacturing, Ammunition (except Small Arms) Manufacturing, Small Arms Manufacturing, Automobile and Other Motor Vehicle

Machine Shops, Precision Turned Product Manufacturing, Industrial Valve Manufacturing, Fluid Power Valve and Hose Fitting Manufacturing, Other Metal Valve and

Small Arms Manufacturing, Semiconductor Machinery Manufacturing, All Other Industrial Machinery Manufacturing, Optical Instrument and Lens Manufacturing, Electron Tube Manufacturing