Tighten ends of anchored truss bolts, using turnbuckles.
Drill bolt holes into roofs at specified distances from ribs or adjacent bolts.
Force bolts into holes, using hydraulic mechanisms of self-propelled bolting machines.
Remove drill bits from chucks after drilling holes, then insert bolts into chucks.
Test bolts for specified tension, using torque wrenches.
Position safety jacks to support underground mine roofs until bolts can be installed.
Position bolting machines, and insert drill bits into chucks.
Rotate chucks to turn bolts and open expansion heads against rock formations.
Install truss bolts traversing entire ceiling spans.
Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
Education and Training -- Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.
Law and Government -- Knowledge of laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process.
Operation and Control -- Controlling operations of equipment or systems.
Equipment Selection -- Determining the kind of tools and equipment needed to do a job.
Equipment Maintenance -- Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.
Active Listening -- Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.
Speaking -- Talking to others to convey information effectively.
Installation -- Installing equipment, machines, wiring, or programs to meet specifications.
Instructing -- Teaching others how to do something.
Critical Thinking -- Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.
Judgment and Decision Making -- Considering the relative costs and benefits of potential actions to choose the most appropriate one.
Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly.
Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.
Reaction Time -- The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears.
Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem.
Multilimb Coordination -- The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion.
Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position.
Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.
Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects.
Depth Perception -- The ability to judge which of several objects is closer or farther away from you, or to judge the distance between you and an object.
Near Vision -- The ability to see details at close range (within a few feet of the observer).
Extent Flexibility -- The ability to bend, stretch, twist, or reach with your body, arms, and/or legs.
Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
Operating Vehicles, Mechanized Devices, or Equipment -- Running, maneuvering, navigating, or driving vehicles or mechanized equipment, such as forklifts, passenger vehicles, aircraft, or water craft.
Evaluating Information to Determine Compliance with Standards -- Using relevant information and individual judgment to determine whether events or processes comply with laws, regulations, or standards.
Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things.
Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects.
Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials.
Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.
Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.
Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person.