This industry comprises establishments primarily engaged in manufacturing construction machinery, surface mining machinery, and logging equipment. Illustrative Examples: Backhoes manufacturing Bulldozers manufacturing Construction and surface mining-type rock drill bits manufacturing Construction-type tractors and attachments manufacturing Off-highway trucks manufacturing Pile-driving equipment manufacturing Portable crushing, pulverizing, and screening machinery manufacturing Powered post hole diggers manufacturing Road graders manufacturing Surface mining machinery (except drilling) manufacturing Cross-References. Establishments primarily engaged in--