# Explosives Workers, Ordnance Handling Experts, and Blasters > 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. - Code: 47-5032.00 (O*NET-SOC; SOC 2018 47-5032) - Family: [Construction & Extraction](https://foundation.org.ai/occupations#family-47), one of its 65 occupations - Tasks: 27 tasks (18 core, 4 supplemental and 5 not rated) - Page: https://foundation.org.ai/occupations/47-5032.00 - JSON: https://foundation.org.ai/data/tasks/47-5032.00.json ## What the work is made of 1. Examine blast areas to determine amounts and kinds of explosive charges needed and to ensure that safety laws are observed. Core task · Task 9904 · Rated by 24 occupational experts, June 2006 2. Tie specified lengths of delaying fuses into patterns in order to time sequences of explosions. Core task · Task 9905 · Rated by 21 occupational experts, June 2006 3. 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. Core task · Task 9906 · Rated by 23 occupational experts, June 2006 4. 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. Core task · Task 9907 · Rated by 23 occupational experts, June 2006 5. 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. Core task · Task 9908 · Rated by 22 occupational experts, June 2006 6. Mark patterns, locations, and depths of charge holes for drilling, and issue drilling instructions. Core task · Task 9909 · Rated by 23 occupational experts, June 2006 7. Compile and keep gun and explosives records in compliance with local and federal laws. Core task · Task 9910 · Rated by 23 occupational experts, June 2006 8. Measure depths of drilled blast holes, using weighted tape measures. Core task · Task 9911 · Rated by 22 occupational experts, June 2006 9. Connect electrical wire to primers, and cover charges or fill blast holes with clay, drill chips, sand, or other material. Core task · Task 9912 · Rated by 24 occupational experts, June 2006 10. Lay primacord between rows of charged blast holes, and tie cord into main lines to form blast patterns. Core task · Task 9913 · Rated by 22 occupational experts, June 2006 11. Assemble and position equipment, explosives, and blasting caps in holes at specified depths, or load perforating guns or torpedoes with explosives. Core task · Task 9914 · Rated by 24 occupational experts, June 2006 12. Verify detonation of charges by observing control panels, or by listening for the sounds of blasts. Core task · Task 9915 · Rated by 24 occupational experts, June 2006 13. Move and store inventories of explosives, loaded perforating guns, and other materials, according to established safety procedures. Core task · Task 9916 · Rated by 24 occupational experts, June 2006 14. 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. Core task · Task 9917 · Rated by 22 occupational experts, June 2006 15. Drive trucks to transport explosives and blasting equipment to blasting sites. Core task · Task 9918 · Rated by 24 occupational experts, June 2006 16. Cut specified lengths of primacord and attach primers to cord ends. Core task · Task 9919 · Rated by 22 occupational experts, June 2006 17. Maintain inventory levels, ordering new supplies as necessary. Core task · Task 9920 · Rated by 24 occupational experts, June 2006 18. Repair and service blasting, shooting, and automotive equipment, and electrical wiring and instruments, using hand tools. Core task · Task 9922 · Rated by 24 occupational experts, June 2006 19. Set up and operate short-wave radio or field telephone equipment to transmit and receive blast information. Supplemental task · Task 9923 · Rated by 23 occupational experts, June 2006 20. Insert waterproof sealers, bullets, and/or powder charges into guns, and screw gun ports back into place. Supplemental task · Task 9924 · Rated by 23 occupational experts, June 2006 21. Clean, gauge, and lubricate gun ports. Supplemental task · Task 9925 · Rated by 23 occupational experts, June 2006 22. Lower perforating guns into wells, using hoists; then use measuring devices and instrument panels to position guns in correct positions for taking samples. Supplemental task · Task 9927 · Rated by 23 occupational experts, June 2006 23. Create and lay out designs for drill and blast patterns. Not rated · Task 23490 · Listed by O*NET analysts, November 2020 24. Document geological formations encountered during work. Not rated · Task 23491 · Listed by O*NET analysts, November 2020 25. Operate machines to flush earth cuttings or to blow dust from holes. Not rated · Task 23492 · Listed by O*NET analysts, November 2020 26. Set up and operate equipment such as hoists, jackhammers, and drills, in order to bore charge holes. Not rated · Task 23493 · Listed by O*NET analysts, November 2020 27. Signal crane operators to move equipment. 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