This video shows rig crewmembers how to safely and properly maintain the blocks, top drive, and rotary table on their rig. Although maintenance is primarily a matter of proper lubrication at the proper time, the program also stresses the importance of safe working practices while a person is suspended above the rig floor or greasing the crown block. It also points out that although many rigs feature top drives, crewmembers must still properly maintain the rotary table.