Place and detonate explosives to demolish structures or to loosen, remove, or displace earth, rock, or other materials. May perform specialized handling, storage, and accounting procedures. Includes seismograph shooters. Fo

Examine blast areas to determine amounts and kinds of explosive charges needed and to ensure that safety laws are observed. Insert powder charges into chambers of sidewall sample-taking cylinders, and assemble cylinders, using special wrenches. Insert waterproof sealers, bullets, and/or powder charges into guns, and screw gun ports back into place. 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. Lay primacord between rows of charged blast holes, and tie cord into main lines to form blast patterns. 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. Lower perforating guns into wells, using hoists; then use measuring devices and instrument panels to position guns in correct positions for taking samples. Mark patterns, locations, and depths of charge holes for drilling, and issue drilling instructions. Measure depths of drilled blast holes, using weighted tape measures. Move and store inventories of explosives, loaded perforating guns, and other materials, according to established safety procedures. Obtain samples of earth from sidewalls of well boreholes, using electrically exploding devices. 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. 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. Set up and operate equipment such as hoists, jackhammers, or drills, in order to bore charge holes. Signal hoist operators to lower torpedoes or sample-taking guns into wells and to raise equipment for sampling from blast holes after detonation. Tie specified lengths of delaying fuses into patterns in order to time sequences of explosions. Verify detonation of charges by observing control panels, or by listening for the sounds of blasts. Clean, gauge, and lubricate gun ports. Drive trucks to transport explosives and blasting equipment to blasting sites. Maintain inventory levels, ordering new supplies as necessary. Observe odometers, weight indicators, and instrument panels in trucks in order to position guns at predetermined points in wells. Repair and service blasting, shooting, and automotive equipment, and electrical wiring and instruments, using hand tools. Repair electrical instruments, using electricians' hand tools. Set up and operate short-wave radio or field telephone equipment to transmit and receive blast information. Assemble and position equipment, explosives, and blasting caps in holes at specified depths, or load perforating guns or torpedoes with explosives. Compile and keep gun and explosives records in compliance with local and federal laws. Connect electrical wire to primers, and cover charges or fill blast holes with clay, drill chips, sand, or other material. Connect gun chambers to electric detonating devices, and operate controls at panelboards, in order to detonate charges in guns or to ignite chemical charges. Cut specified lengths of primacord and attach primers to cord ends.

Public Safety and Security -- Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions. Physics -- Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub- atomic structures and processes. Engineering and Technology -- Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services. Chemistry -- Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods. Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. Building and Construction -- Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads. Transportation -- Knowledge of principles and methods for moving people or goods by air, rail, sea, or road, including the relative costs and benefits.

Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Mathematics -- Using mathematics to solve problems. Operation and Control -- Controlling operations of equipment or systems. Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly.

Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). 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. Reaction Time -- The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears. Oral Expression -- The ability to communicate information and ideas in speaking so others will understand. 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. Mathematical Reasoning -- The ability to choose the right mathematical methods or formulas to solve a problem. Number Facility -- The ability to add, subtract, multiply, or divide quickly and correctly. Spatial Orientation -- The ability to know your location in relation to the environment or to know where other objects are in relation to you. 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.

Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). 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. Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems. Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems. Estimating the Quantifiable Characteristics of Products, Events, or Information -- Estimating sizes, distances, and quantities; or determining time, costs, resources, or materials needed to perform a work activity. Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person. Repairing and Maintaining Mechanical Equipment -- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles. Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.