- Align machines, cutterheads, or depth gauge makers with reference stakes and guidelines or ground or position equipment, following hand signals of other workers.
Occupations with related tasks Save Table: XLSX CSV
- Assemble and position equipment, explosives, and blasting caps in holes at specified depths, or load perforating guns or torpedoes with explosives.
- Lower perforating guns into wells, using hoists; then use measuring devices and instrument panels to position guns in correct positions for taking samples.
- Place safety cones around blast areas to alert other workers of danger zones, and signal workers as necessary to ensure that they clear blast sites prior to explosions.
- Examine blast areas to determine amounts and kinds of explosive charges needed and to ensure that safety laws are observed.
- Tie specified lengths of delaying fuses into patterns in order to time sequences of explosions.
- Place explosive charges in holes or other spots; then detonate explosives to demolish structures or to loosen, remove, or displace earth, rock, or other materials.
- Insert, pack, and pour explosives, such as dynamite, ammonium nitrate, black powder, or slurries into blast holes; then shovel drill cuttings, admit water into boreholes, and tamp material to compact charges.
- Mark patterns, locations, and depths of charge holes for drilling, and issue drilling instructions.
- Compile and keep gun and explosives records in compliance with local and federal laws.
- Measure depths of drilled blast holes, using weighted tape measures.
- Connect electrical wire to primers, and cover charges or fill blast holes with clay, drill chips, sand, or other material.
- Lay primacord between rows of charged blast holes, and tie cord into main lines to form blast patterns.
- Verify detonation of charges by observing control panels, or by listening for the sounds of blasts.
- Move and store inventories of explosives, loaded perforating guns, and other materials, according to established safety procedures.
- Light fuses, drop detonating devices into wells or boreholes, or activate firing devices with plungers, dials, or buttons, in order to set off single or multiple blasts.
- Drive trucks to transport explosives and blasting equipment to blasting sites.
- Cut specified lengths of primacord and attach primers to cord ends.
- Maintain inventory levels, ordering new supplies as necessary.
- Repair and service blasting, shooting, and automotive equipment, and electrical wiring and instruments, using hand tools.
- Set up and operate short-wave radio or field telephone equipment to transmit and receive blast information.
- Insert waterproof sealers, bullets, and/or powder charges into guns, and screw gun ports back into place.
- Clean, gauge, and lubricate gun ports.
- Connect gun chambers to electric detonating devices, and operate controls at panelboards, in order to detonate charges in guns or to ignite chemical charges.
- Insert powder charges into chambers of sidewall sample-taking cylinders, and assemble cylinders, using special wrenches.
- Obtain samples of earth from sidewalls of well boreholes, using electrically exploding devices.
- Create and lay out designs for drill and blast patterns.
- Document geological formations encountered during work.
- Operate machines to flush earth cuttings or to blow dust from holes.
- Set up and operate equipment such as hoists, jackhammers, and drills, in order to bore charge holes.
- Signal crane operators to move equipment.
- Assemble and position equipment, explosives, and blasting caps in holes at specified depths, or load perforating guns or torpedoes with explosives.
- Lower perforating guns into wells, using hoists; then use measuring devices and instrument panels to position guns in correct positions for taking samples.
- Place safety cones around blast areas to alert other workers of danger zones, and signal workers as necessary to ensure that they clear blast sites prior to explosions.
- Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
- Place and install screens, casings, pumps, and other well fixtures to develop wells.
- Operate controls to stabilize machines and to position and align drills.
- Start, stop, and control drilling speed of machines and insertion of casings into holes.
- Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
- Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
- Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
- Operate machines to flush earth cuttings or to blow dust from holes.
- Verify depths and alignments of boring positions.
- Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
- Select the appropriate drill for the job, using knowledge of rock or soil conditions.
- Document geological formations encountered during work.
- Drive trucks, tractors, or truck-mounted drills to and from work sites.
- Record drilling progress and geological data.
- Retrieve lost equipment from bore holes, using retrieval tools and equipment.
- Fabricate well casings.
- Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
- Create and lay out designs for drill and blast patterns.
- Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
- Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
- Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
- Perform pumping tests to assess well performance.
- Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
- Design well pumping systems.
- Signal crane operators to move equipment.
- Withdraw drill rods from holes, and extract core samples.
- Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
- Retract augers to force discharge dirt from holes.
- Observe electronic graph recorders and flow meters that monitor the water used to flush debris from holes.
- Monitor drilling operations, by checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.
- Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
- Place and install screens, casings, pumps, and other well fixtures to develop wells.
- Position bolting machines, and insert drill bits into chucks.
- Position safety jacks to support underground mine roofs until bolts can be installed.
- Drill bolt holes into roofs at specified distances from ribs or adjacent bolts.
- Pull down loose rock that cannot be supported.
- Perform safety checks on equipment before operating.
- Perform tests to determine if methane gas is present.
- Force bolts into holes, using hydraulic mechanisms of self-propelled bolting machines.
- Perform ventilation tasks, such as hanging ventilation curtains and tubes.
- Dust rocks after bolting.
- Install various types of bolts, including truss, glue, and resin bolts, traversing entire ceiling spans.
- Drill test holes and test bolts for specified tension, using torque wrenches.
- Rotate chucks to turn bolts and open expansion heads against rock formations.
- Remove drill bits from chucks after drilling holes, and insert bolts into chucks.
- Tighten ends of anchored truss bolts, using turnbuckles.
- Position bolting machines, and insert drill bits into chucks.
- Position safety jacks to support underground mine roofs until bolts can be installed.
- Reposition machines to make additional holes or cuts.
- Hang ventilation tubing and ventilation curtains to ensure that the mining face area is kept properly ventilated.
- Conduct methane gas checks to ensure breathing quality of air.
- Check the stability of roof and rib support systems before mining face areas.
- Operate mining machines to gather coal and convey it to floors or shuttle cars.
- Drive machines into position at working faces.
- Move controls to start and regulate movement of conveyors and to start and position drill cutters or torches.
- Determine locations, boundaries, and depths of holes or channels to be cut.
- Observe and listen to equipment operation to detect binding or stoppage of tools or other equipment malfunctions.
- Repair, oil, and adjust machines, and change cutting teeth, using wrenches.
- Install casings to prevent cave-ins.
- Scrape or wash conveyors, using belt scrapers or belt washers, to minimize dust production.
- Move levers to raise and lower hydraulic safety bars supporting roofs above machines until other workers complete framing.
- Apply new technologies developed to minimize the environmental impact of coal mining.
- Guide and assist crews laying track and resetting supports and blocking.
- Reposition machines to make additional holes or cuts.
- Hang ventilation tubing and ventilation curtains to ensure that the mining face area is kept properly ventilated.
- Position and prepare truck-mounted derricks at drilling areas specified on field maps.
- Dig holes, set forms, and mix and pour concrete, for foundations of steel or wooden derricks.
- Train crews, and introduce procedures to make drill work more safe and effective.
- Observe pressure gauge and move throttles and levers to control the speed of rotary tables, and to regulate pressure of tools at bottoms of boreholes.
- Count sections of drill rod to determine depths of boreholes.
- Push levers and brake pedals to control gasoline, diesel, electric, or steam draw works that lower and raise drill pipes and casings in and out of wells.
- Connect sections of drill pipe, using hand tools and powered wrenches and tongs.
- Maintain records of footage drilled, location and nature of strata penetrated, materials and tools used, services rendered, and time required.
- Maintain and adjust machinery to ensure proper performance.
- Start and examine operation of slush pumps to ensure circulation and consistency of drilling fluid or mud in well.
- Locate and recover lost or broken bits, casings, and drill pipes from wells, using special tools.
- Weigh clay, and mix with water and chemicals to make drilling mud.
- Direct rig crews in drilling and other activities, such as setting up rigs and completing or servicing wells.
- Monitor progress of drilling operations, and select and change drill bits according to the nature of strata, using hand tools.
- Repair or replace defective parts of machinery, such as rotary drill rigs, water trucks, air compressors, and pumps, using hand tools.
- Clean and oil pulleys, blocks, and cables.
- Bolt together pump and engine parts, and connect tanks and flow lines.
- Remove core samples during drilling to determine the nature of the strata being drilled.
- Cap wells with packers, or turn valves, to regulate outflow of oil from wells.
- Line drilled holes with pipes, and install all necessary hardware, to prepare new wells.
- Plug observation wells, and restore sites.
- Lower and explode charges in boreholes to start flow of oil from wells.
- Position and prepare truck-mounted derricks at drilling areas specified on field maps.
- Dig holes, set forms, and mix and pour concrete, for foundations of steel or wooden derricks.
- Position and align derrick elements, using harnesses and platform climbing devices.
- Inspect derricks, or order their inspection, prior to being raised or lowered.
- Inspect derricks for flaws, and clean and oil derricks to maintain proper working conditions.
- Control the viscosity and weight of the drilling fluid.
- Repair pumps, mud tanks, and related equipment.
- Set and bolt crown blocks to posts at tops of derricks.
- Listen to mud pumps and check regularly for vibration and other problems to ensure that rig pumps and drilling mud systems are working properly.
- Start pumps that circulate mud through drill pipes and boreholes to cool drill bits and flush out drill cuttings.
- Supervise crew members, and provide assistance in training them.
- Guide lengths of pipe into and out of elevators.
- Prepare mud reports, and instruct crews about the handling of any chemical additives.
- Clamp holding fixtures on ends of hoisting cables.
- Weigh clay, and mix with water and chemicals to make drilling mud, using portable mixers.
- String cables through pulleys and blocks.
- Steady pipes during connection to or disconnection from drill or casing strings.
- Position and align derrick elements, using harnesses and platform climbing devices.
- Raise, lower, or position equipment, tools, and materials, using hoist, hand line, or block and tackle.
- Strip insulation from wire ends, using wire stripping pliers, and attach wires to terminals for subsequent soldering.
- Trace out short circuits in wiring, using test meter.
- Measure, cut, and bend wire and conduit, using measuring instruments and hand tools.
- Examine electrical units for loose connections and broken insulation and tighten connections, using hand tools.
- Maintain tools, vehicles, and equipment and keep parts and supplies in order.
- Drill holes and pull or push wiring through openings, using hand and power tools.
- Clean work area and wash parts.
- Perform semi-skilled and unskilled laboring duties related to the installation, maintenance and repair of a wide variety of electrical systems and equipment.
- Thread conduit ends, connect couplings, and fabricate and secure conduit support brackets, using hand tools.
- Disassemble defective electrical equipment, replace defective or worn parts, and reassemble equipment, using hand tools.
- Construct controllers and panels, using power drills, drill presses, taps, saws, and punches.
- Transport tools, materials, equipment, and supplies to work site by hand, handtruck, or heavy, motorized truck.
- String transmission lines or cables through ducts or conduits, under the ground, through equipment, or to towers.
- Install copper-clad ground rods, using a manual post driver.
- Dig trenches or holes for installation of conduit or supports.
- Bolt component parts together to form tower assemblies, using hand tools.
- Erect electrical system components and barricades, and rig scaffolds, hoists, and shoring.
- Trim trees and clear undergrowth along right-of-way.
- Requisition materials, using warehouse requisition or release forms.
- Solder electrical connections, using soldering iron.
- Paint a variety of objects related to electrical functions.
- Break up concrete, using airhammer, to facilitate installation, construction, or repair of equipment.
- Operate heavy equipment, such as backhoes.
- Operate cutting torches and welding equipment, while working with conduit and metal components to construct devices associated with electrical functions.
- Raise, lower, or position equipment, tools, and materials, using hoist, hand line, or block and tackle.
