- Backfill piping trenches to protect pipes from damage.
Occupations with related tasks Save Table: XLSX CSV
- Precast terrazzo blocks in wooden forms.
- Signal truck driver to position truck to facilitate pouring concrete and move chute to direct concrete on forms.
- Spread, level, or smooth concrete or terrazzo mixtures to form bases or finished surfaces, using rakes, shovels, hand or power trowels, hand or power screeds, or floats.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth with a trowel.
- Mold expansion joints and edges, using edging tools, jointers, or straightedges.
- Wet concrete surface and rub with stone to smooth surface and obtain specified finish.
- Spread roofing paper on surface of foundation and spread concrete onto roofing paper with trowel to form terrazzo base.
- Produce rough concrete surface, using broom.
- Measure designated amounts of ingredients for terrazzo or grout, according to standard formulas and specifications, using graduated containers and scales, and load ingredients into portable mixer.
- Grind surfaces with a power grinder, or polish surfaces with polishing or surfacing machines.
- Cut metal division strips and press them into the terrazzo base for joints or changes of color to form designs or patterns or to help prevent cracks.
- Blend marble chip mixtures, place into panels, and push a roller over the surface to embed the chips.
- Modify mixing, grouting, grinding, or cleaning procedures, according to type of installation or material used.
- Grind curved surfaces or areas inaccessible to surfacing machine, such as stairways or cabinet tops, with portable hand grinder.
- Wash polished terrazzo surface, using cleaner and water, and apply sealer and curing agent according to manufacturer's specifications, using brush or sprayer.
- Position and secure moisture membrane and wire mesh in preparation for pouring base materials for terrazzo installation.
- Fill slight grinding depressions with matching grout material and hand-trowel for a smooth, uniform surface.
- Clean installation site, mixing and storage areas, tools, machines, and equipment, and store materials and equipment.
- Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
- Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
- Chip, scrape, or grind high spots, ridges, or rough projections to finish concrete, using pneumatic chisel, hand chisel, or other hand tools.
- Move terrazzo installation materials, tools, machines, or work devices to work areas, manually or using wheelbarrow.
- Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.
- Repair concrete by cutting out damaged areas, drilling holes for reinforcing rods, and positioning reinforcing rods, using power saw and drill.
- Build wooden molds, clamping molds around areas to be repaired, or setting up frames to the proper depth and alignment.
- Remove frames when the foundation is dry.
- Precast terrazzo blocks in wooden forms.
- Signal truck driver to position truck to facilitate pouring concrete and move chute to direct concrete on forms.
- Spread, level, or smooth concrete or terrazzo mixtures to form bases or finished surfaces, using rakes, shovels, hand or power trowels, hand or power screeds, or floats.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth with a trowel.
- Mold expansion joints and edges, using edging tools, jointers, or straightedges.
- Wet concrete surface and rub with stone to smooth surface and obtain specified finish.
- Spread roofing paper on surface of foundation and spread concrete onto roofing paper with trowel to form terrazzo base.
- Produce rough concrete surface, using broom.
- Signal truck driver to position truck to facilitate pouring concrete, and move chute to direct concrete on forms.
- Spread, level, and smooth concrete, using rake, shovel, hand or power trowel, hand or power screed, and float.
- Mold expansion joints and edges, using edging tools, jointers, and straightedge.
- Produce rough concrete surface, using broom.
- Apply hardening and sealing compounds to cure surface of concrete, and waterproof or restore surface.
- Operate power vibrator to compact concrete.
- Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.
- Wet concrete surface, and rub with stone to smooth surface and obtain specified finish.
- Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.
- Check the forms that hold the concrete to see that they are properly constructed.
- Set the forms that hold concrete to the desired pitch and depth, and align them.
- Monitor how the wind, heat, or cold affect the curing of the concrete throughout the entire process.
- Direct the casting of the concrete and supervise laborers who use shovels or special tools to spread it.
- Waterproof or restore concrete surfaces, using appropriate compounds.
- Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
- Chip, scrape, and grind high spots, ridges, and rough projections to finish concrete, using pneumatic chisels, power grinders, or hand tools.
- Cut out damaged areas, drill holes for reinforcing rods, and position reinforcing rods to repair concrete, using power saw and drill.
- Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.
- Build wooden molds, and clamp molds around area to be repaired, using hand tools.
- Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
- Fabricate concrete beams, columns, and panels.
- Polish surface, using polishing or surfacing machine.
- Cut metal division strips, and press them into terrazzo base so that top edges form desired design or pattern.
- Push roller over surface to embed chips in surface.
- Apply muriatic acid to clean surface, and rinse with water.
- Signal truck driver to position truck to facilitate pouring concrete, and move chute to direct concrete on forms.
- Spread, level, and smooth concrete, using rake, shovel, hand or power trowel, hand or power screed, and float.
- Mold expansion joints and edges, using edging tools, jointers, and straightedge.
- Produce rough concrete surface, using broom.
- Apply hardening and sealing compounds to cure surface of concrete, and waterproof or restore surface.
- Operate power vibrator to compact concrete.
- Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.
- Wet concrete surface, and rub with stone to smooth surface and obtain specified finish.
- Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.
- Mop or pour hot asphalt or tar onto roof bases.
- Cement or nail flashing strips of metal or shingle over joints to make them watertight.
- Glaze top layers to make a smooth finish or embed gravel in the bitumen for rough surfaces.
- Apply gravel or pebbles over top layers of roofs, using rakes or stiff-bristled brooms.
- Inspect problem roofs to determine the best repair procedures.
- Remove snow, water, or debris from roofs prior to applying roofing materials.
- Set up scaffolding to provide safe access to roofs.
- Estimate materials and labor required to complete roofing jobs.
- Install partially overlapping layers of material over roof insulation surfaces, using chalk lines, gauges on shingling hatchets, or lines on shingles.
- Cut felt, shingles, or strips of flashing to fit angles formed by walls, vents, or intersecting roof surfaces.
- Apply plastic coatings, membranes, fiberglass, or felt over sloped roofs before applying shingles.
- Install, repair, or replace single-ply roofing systems, using waterproof sheet materials such as modified plastics, elastomeric, or other asphaltic compositions.
- Attach roofing paper to roofs in overlapping strips to form bases for other materials.
- Cover roofs or exterior walls of structures with slate, asphalt, aluminum, wood, gravel, gypsum, or related materials, using brushes, knives, punches, hammers, or other tools.
- Waterproof or damp-proof walls, floors, roofs, foundations, or basements by painting or spraying surfaces with waterproof coatings or by attaching waterproofing membranes to surfaces.
- Apply reflective roof coatings, such as special paints or single-ply roofing sheets, to existing roofs to reduce solar heat absorption.
- Apply alternate layers of hot asphalt or tar and roofing paper to roofs.
- Install vapor barriers or layers of insulation on flat roofs.
- Cover exposed nailheads with roofing cement or caulking to prevent water leakage or rust.
- Smooth rough spots to prepare surfaces for waterproofing, using hammers, chisels, or rubbing bricks.
- Install attic ventilation systems, such as turbine vents, gable or ridge vents, or conventional or solar-powered exhaust fans.
- Install skylights on roofs to increase natural light inside structures or to reduce energy costs.
- Install solar roofing systems that have energy-collecting photovoltaic panels built into roofing membranes, shingles, or tiles.
- Spray roofs, sidings, or walls to bind, seal, insulate, or soundproof sections of structures, using spray guns, air compressors, or heaters.
- Attach solar panels to existing roofs, according to specifications and without damaging roofing materials or the structural integrity of buildings.
- Punch holes in slate, tile, terra cotta, or wooden shingles, using punches and hammers.
- Apply modular soil- and plant-containing grids over existing roof membranes to create green roofs.
- Install layers of vegetation-based green roofs, including protective membranes, drainage, aeration, water retention and filter layers, soil substrates, irrigation materials, and plants.
- Mop or pour hot asphalt or tar onto roof bases.
- Cement or nail flashing strips of metal or shingle over joints to make them watertight.
- Glaze top layers to make a smooth finish or embed gravel in the bitumen for rough surfaces.
- Apply gravel or pebbles over top layers of roofs, using rakes or stiff-bristled brooms.
- Mix, pour, or spread concrete, using portable cement mixers.
- Dig ditches or trenches, backfill excavations, or compact and level earth to grade specifications, using picks, shovels, pneumatic tampers, or rakes.
- Smooth or finish freshly poured cement or concrete, using floats, trowels, screeds, or powered cement finishing tools.
- Provide assistance to craft workers, such as carpenters, plasterers, or masons.
- Tend pumps, compressors, or generators to provide power for tools, machinery, or equipment or to heat or move materials, such as asphalt.
- Lubricate, clean, or repair machinery, equipment, or tools.
- Signal equipment operators to facilitate alignment, movement, or adjustment of machinery, equipment, or materials.
- Read plans, instructions, or specifications to determine work activities.
- Measure, mark, or record openings or distances to layout areas where construction work will be performed.
- Clean or prepare construction sites to eliminate possible hazards.
- Load, unload, or identify building materials, machinery, or tools, distributing them to the appropriate locations, according to project plans or specifications.
- Position, join, align, or seal structural components, such as concrete wall sections or pipes.
- Perform site activities required of green certified construction practices, such as implementing waste management procedures, identifying materials for reuse, or installing erosion or sedimentation control mechanisms.
- Control traffic passing near, in, or around work zones.
- Install sewer, water, or storm drain pipes, using pipe-laying machinery or laser guidance equipment.
- Operate or maintain air monitoring or other sampling devices in confined or hazardous environments.
- Erect or dismantle scaffolding, shoring, braces, traffic barricades, ramps, or other temporary structures.
- Perform building weatherization tasks, such as repairing windows, adding insulation, or applying weather-stripping materials.
- Apply weather-stripping to reduce energy loss.
- Spray materials, such as water, sand, steam, vinyl, paint, or stucco, through hoses to clean, coat, or seal surfaces.
- Raze buildings or salvage useful materials.
- Mop, brush, or spread paints, cleaning solutions, or other compounds over surfaces to clean them or to provide protection.
- Position or dismantle forms for pouring concrete, using saws, hammers, nails, or bolts.
- Grind, scrape, sand, or polish surfaces, such as concrete, marble, terrazzo, or wood flooring, using abrasive tools or machines.
- Place, consolidate, or protect case-in-place concrete or masonry structures.
- Mix ingredients to create compounds for covering or cleaning surfaces.
- Operate jackhammers or drills to break up concrete or pavement.
- Apply caulking compounds by hand or caulking guns to protect against entry of water or air.
- Tend machines that pump concrete, grout, cement, sand, plaster, or stucco through spray guns for application to ceilings or walls.
- Identify, pack, or transport hazardous or radioactive materials.
- Use computers or other input devices to control robotic pipe cutters or cleaners.
- Perform construction laborer duties at green building sites, such as renewable energy plants or wind turbine installations.
- Mix, pour, or spread concrete, using portable cement mixers.
- Dig ditches or trenches, backfill excavations, or compact and level earth to grade specifications, using picks, shovels, pneumatic tampers, or rakes.
- Smooth or finish freshly poured cement or concrete, using floats, trowels, screeds, or powered cement finishing tools.
- Provide assistance to craft workers, such as carpenters, plasterers, or masons.
- Pour specified amounts of chemical solutions into stripping tanks.
- Perform support duties to assist painters, paperhangers, plasterers, or masons.
- Supply or hold tools and materials.
- Clean work areas and equipment.
- Apply protective coverings, such as masking tape, to articles or areas that could be damaged or stained by work processes.
- Erect scaffolding.
- Fill cracks or breaks in surfaces of plaster articles or areas with putty or epoxy compounds.
- Smooth surfaces of articles to be painted, using sanding and buffing tools and equipment.
- Mix plaster, and carry plaster to plasterers.
- Place articles to be stripped into stripping tanks.
- Remove articles such as cabinets, metal furniture, and paint containers from stripping tanks after prescribed periods of time.
- Pour specified amounts of chemical solutions into stripping tanks.
- Perform support duties to assist painters, paperhangers, plasterers, or masons.
- Supply or hold tools and materials.
- Dig holes, set forms, and mix and pour concrete into forms to make foundations for wood or steel derricks.
- Supply equipment to rig floors as requested and provide assistance to roughnecks.
- Dig drainage ditches around wells and storage tanks.
- Unscrew or tighten pipes, casing, tubing, and pump rods, using hand and power wrenches and tongs.
- Dismantle and repair oil field machinery, boilers, and steam engine parts, using hand tools and power tools.
- Guide cranes to move loads about decks.
- Walk flow lines to locate leaks, using electronic detectors and by making visual inspections, and repair the leaks.
- Lay gas and oil pipelines.
- Bolt together pump and engine parts.
- Move pipes to and from trucks, using truck winches and motorized lifts, or by hand.
- Clean trucks used in the fields.
- Bolt or nail together wood or steel framework to erect derricks.
- Clean up spilled oil by bailing it into barrels.
- Keep pipe deck and main deck areas clean and tidy.
- Cut down and remove trees and brush to clear drill sites, to reduce fire hazards, and to make way for roads to sites.
- Dig holes, set forms, and mix and pour concrete into forms to make foundations for wood or steel derricks.
- Supply equipment to rig floors as requested and provide assistance to roughnecks.
- Dig drainage ditches around wells and storage tanks.
- Dump, spread, and tamp asphalt, using pneumatic tampers, to repair joints and patch broken pavement.
- Haul and spread sand, gravel, and clay to fill washouts and repair road shoulders.
- Set out signs and cones around work areas to divert traffic.
- Flag motorists to warn them of obstacles or repair work ahead.
- Perform preventative maintenance on vehicles and heavy equipment.
- Drive trucks to transport crews and equipment to work sites.
- Erect, install, or repair guardrails, road shoulders, berms, highway markers, warning signals, and highway lighting, using hand tools and power tools.
- Clean and clear debris from culverts, catch basins, drop inlets, ditches, and other drain structures.
- Drive heavy equipment and vehicles with adjustable attachments to sweep debris from paved surfaces, mow grass and weeds, remove snow and ice, and spread salt and sand.
- Inspect, clean, and repair drainage systems, bridges, tunnels, and other structures.
- Remove litter and debris from roadways, including debris from rock and mud slides.
- Perform roadside landscaping work, such as clearing weeds and brush, and planting and trimming trees.
- Apply poisons along roadsides and in animal burrows to eliminate unwanted roadside vegetation and rodents.
- Measure and mark locations for installation of markers, using tape, string, or chalk.
- Paint traffic control lines and place pavement traffic messages, by hand or using machines.
- Apply oil to road surfaces, using sprayers.
- Inspect markers to verify accurate installation.
- Place and remove snow fences used to prevent the accumulation of drifting snow on highways.
- Blend compounds to form adhesive mixtures used for marker installation.
- Dump, spread, and tamp asphalt, using pneumatic tampers, to repair joints and patch broken pavement.
- Haul and spread sand, gravel, and clay to fill washouts and repair road shoulders.
- Mix and pour concrete around bases of posts, or tamp soil into postholes to embed posts.
- Dig postholes, using spades, posthole diggers, or power-driven augers.
- Establish the location for a fence, and gather information needed to ensure that there are no electric cables or water lines in the area.
- Set metal or wooden posts in upright positions in postholes.
- Measure and lay out fence lines and mark posthole positions, following instructions, drawings, or specifications.
- Align posts, by lines or sighting, and verify vertical alignment of posts, using plumb bobs or spirit levels.
- Attach rails or tension wire along bottoms of posts to form fencing frames.
- Attach fence rail supports to posts, using hammers and pliers.
- Assemble gates, and fasten gates into position, using hand tools.
- Make rails for fences, by sawing lumber or by cutting metal tubing to required lengths.
- Nail top and bottom rails to fence posts, or insert them in slots on posts.
- Discuss fencing needs with customers, and estimate and quote prices.
- Stretch wire, wire mesh, or chain link fencing between posts, and attach fencing to frames.
- Complete top fence rails of metal fences by connecting tube sections, using metal sleeves.
- Erect alternate panel, basket weave, and louvered fences.
- Insert metal tubing through rail supports.
- Nail pointed slats to rails to construct picket fences.
- Construct and repair barriers, retaining walls, trellises, and other types of fences, walls, and gates.
- Weld metal parts together, using portable gas welding equipment.
- Blast rock formations and rocky areas with dynamite to facilitate posthole digging.
- Mix and pour concrete around bases of posts, or tamp soil into postholes to embed posts.
- Dig postholes, using spades, posthole diggers, or power-driven augers.
- Fill water tanks and check tanks, pipes, and fittings for leaks.
- Cut, miter, and glue piping insulation to insulate plumbing pipes and fittings.
- Test operation or functionality of mechanical, plumbing, electrical, and control systems.
- Apply weather seal, such as pipe flashings and sealants, to roof penetrations and structural devices.
- Install solar collector mounting devices on tile, asphalt, shingle, or built-up gravel roofs, using appropriate materials and penetration methods.
- Install copper or plastic plumbing using pipes, fittings, pipe cutters, acetylene torches, solder, wire brushes, sand cloths, flux, plastic pipe cleaners, or plastic glue.
- Identify plumbing, electrical, environmental, or safety hazards associated with solar thermal installations.
- Demonstrate start-up, shut-down, maintenance, diagnostic, and safety procedures to thermal system owners.
- Install circulating pumps using pipe, fittings, soldering equipment, electrical supplies, and hand tools.
- Install flat-plat, evacuated glass, or concentrating solar collectors on mounting devices, using brackets or struts.
- Install solar thermal system controllers and sensors.
- Design active direct or indirect, passive direct or indirect, or pool solar systems.
- Determine locations for installing solar subsystem components, including piping, water heaters, valves, and ancillary equipment.
- Perform routine maintenance or repairs to restore solar thermal systems to baseline operating conditions.
- Install heat exchangers and heat exchanger fluids according to installation manuals and schematics.
- Apply operation or identification tags or labels to system components, as required.
- Connect water heaters and storage tanks to power and water sources.
- Install plumbing, such as dip tubes, port fittings, drain tank valves, pressure temperature relief valves, or tanks, according to manufacturer specifications and building codes.
- Install monitoring system components, such as flow meters, temperature gauges, and pressure gauges, according to system design and manufacturer specifications.
- Assess collector sites to ensure structural integrity of potential mounting surfaces or the best orientation and tilt for solar collectors.
- Apply ultraviolet radiation protection to prevent degradation of plumbing.
- Fill water tanks and check tanks, pipes, and fittings for leaks.
- Cut, miter, and glue piping insulation to insulate plumbing pipes and fittings.
- Mix or pour concrete into forms to encase waste material for disposal.
- Build containment areas prior to beginning abatement or decontamination work.
- Remove asbestos or lead from surfaces, using hand or power tools such as scrapers, vacuums, or high-pressure sprayers.
- Identify asbestos, lead, or other hazardous materials to be removed, using monitoring devices.
- Prepare hazardous material for removal or storage.
- Comply with prescribed safety procedures or federal laws regulating waste disposal methods.
- Load or unload materials into containers or onto trucks, using hoists or forklifts.
- Clean contaminated equipment or areas for reuse, using detergents or solvents, sandblasters, filter pumps, or steam cleaners.
- Remove or limit contamination following emergencies involving hazardous substances.
- Clean mold-contaminated sites by removing damaged porous materials or thoroughly cleaning all contaminated nonporous materials.
- Operate machines or equipment to remove, package, store, or transport loads of waste materials.
- Record numbers of containers stored at disposal sites, specifying amounts or types of equipment or waste disposed.
- Sort specialized hazardous waste at landfills or disposal centers, following proper disposal procedures.
- Operate cranes to move or load baskets, casks, or canisters.
- Drive trucks or other heavy equipment to convey contaminated waste to designated sea or ground locations.
- Identify or separate waste products or materials for recycling or reuse.
- Upload baskets of irradiated elements onto machines that insert fuel elements into canisters and secure lids.
- Process e-waste, such as computer components containing lead or mercury.
- Organize or track the locations of hazardous items in landfills.
- Apply bioremediation techniques to hazardous wastes to allow naturally occurring bacteria to break down toxic substances.
- Package, store, or move irradiated fuel elements in the underwater storage basins of nuclear reactor plants, using machines or equipment.
- Mix or pour concrete into forms to encase waste material for disposal.
- 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.
- Position and prepare truck-mounted derricks at drilling areas specified on field maps.
- Plug observation wells, and restore sites.
- Lower and explode charges in boreholes to start flow of oil from wells.
- Dig holes, set forms, and mix and pour concrete, for foundations of steel or wooden derricks.
- Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
- 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.
- Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
- Record drilling progress and geological data.
- Retrieve lost equipment from bore holes, using retrieval tools and equipment.
- Fabricate well casings.
- Create and lay out designs for drill and blast patterns.
- Place and install screens, casings, pumps, and other well fixtures to develop wells.
- 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.
- Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
- 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.
- 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 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.
- 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.
- 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.
- Assemble and position equipment, explosives, and blasting caps in holes at specified depths, or load perforating guns or torpedoes with explosives.
- 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.
- Lower perforating guns into wells, using hoists; then use measuring devices and instrument panels to position guns in correct positions for taking samples.
- 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.
- 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.
