دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see motorhand.

n: The member of the rig crew responsible for maintenance of the engines. While all members of the rig crew help with major repairs, the motorman does routine preventive maintenance and minor repairs.

n: the crew member on a rotary drilling rig, usually the most experienced rotary helper, who is responsible for the care and operation of drilling engines. Also called motorman. Compare fireman.