{"c":"47-5043.00","n":"Roof Bolters, Mining","d":"Operate machinery to install roof support bolts in underground mine.","g":"47","tasks":[{"t":"Drill bolt holes into roofs at specified distances from ribs or adjacent bolts.","core":true,"id":4889,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Pull down loose rock that cannot be supported.","core":true,"id":21017,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Position bolting machines, and insert drill bits into chucks.","core":true,"id":4894,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Perform safety checks on equipment before operating.","core":true,"id":21018,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Perform tests to determine if methane gas is present.","core":true,"id":21019,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Force bolts into holes, using hydraulic mechanisms of self-propelled bolting machines.","core":true,"id":4890,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Perform ventilation tasks, such as hanging ventilation curtains and tubes.","core":true,"id":21020,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Dust rocks after bolting.","core":true,"id":21021,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Install various types of bolts, including truss, glue, and resin bolts, traversing entire ceiling spans.","core":true,"id":21022,"r":45,"dt":"07/2017","src":"Incumbent"},{"t":"Drill test holes and test bolts for specified tension, using torque wrenches.","core":true,"id":21023,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Position safety jacks to support underground mine roofs until bolts can be installed.","core":true,"id":4893,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Rotate chucks to turn bolts and open expansion heads against rock formations.","core":true,"id":4895,"r":46,"dt":"07/2017","src":"Incumbent"},{"t":"Remove drill bits from chucks after drilling holes, and insert bolts into chucks.","core":true,"id":4891,"r":47,"dt":"07/2017","src":"Incumbent"},{"t":"Tighten ends of anchored truss bolts, using turnbuckles.","core":true,"id":4897,"r":46,"dt":"07/2017","src":"Incumbent"}]}