A land rig is a drilling rig used to drill holes onshore rather than offshore and requires a crew to function. The size and function of the rig determine the positions available, but typically there are six people in the crew: rig manager, derrickhand, leasehand, motorhand, driller, and floorhand. Your duties and responsibilities in any of these careers involve cleaning, maintaining, and operating the rig. Drills operate 24 hours a day, so multiple crew members rotate to fill 12-hour shifts. There are additional land rig positions, including truck drivers to transfer material to various locations, managers to oversee production, and oil and gas support staff.