Personal collection only for personal learning about the safe operation techniques of the drill rig. Name of the project design unit of the tianbao group in the construction unit of the energy saving building: the operational content of the sub-deposit rig shall be completed by the end of the month of the year and shall be signed by the bottom group or staff member: 1. Before use shall be checked, the wind motor shall be flexible in the field and shall be removed from the surface of the drill and shall be cleared of the obstacles on foot, and prior to operation of the drill shall be checked for sufficient water to reduce dust flow ... At any time, in particular when a hole is drilled, it shall be strengthened that the drill shall not be drilled, and when required, the pump shall not be drilled into the core, and shall be drilled in such a manner as to prevent the use of the pre-drigger. Upon cessation of work, a small amount of compressed air shall be supplied to prevent plume intrusion into the shocker; when drilling is stopped for a long time, the shocker shall be removed from the bottom of the hole 1 - 2 m and the drill shall be fixed. 8. Drilling shall be replaced immediately, the diameter of the drill shall not be greater than the diameter of the original drill. 9. Drilling shall not be larger than the diameter of the original drill. 9. When a drill is discovered, the shocker shall be removed out of the hole, if the drill is not moving forward, and when a drill is discovered, the shocker shall be removed out of the hole; when a drill is found, a hard alloying of the drill shall be forced out of the air, and a small piece of debris may be drilled with less than a hole, with a yellow mud or asphalt shall be drawn out of the hole. 10. When a drill occurs, the drill shall be reduced immediately, not greater than 10 per cent of the length of the length of the length of the length of the length of the length of the drill
