Places and detonates explosives to demolish structures or to loosen, remove, or displace earth, rock, or other materials. May perform specialized handling, storage, and accounting procedures.
This career is part of the Architecture and Construction cluster Construction pathway.
A person in this career:
- Examines blast areas to determine amounts and kinds of explosive charges needed and to ensure that safety laws are observed.
- Ties specified lengths of delaying fuses into patterns in order to time sequences of explosions.
- Places safety cones around blast areas to alert other workers of danger zones, and signals workers as necessary to ensure that they clear blast sites prior to explosions.
- Places explosive charges in holes or other spots; then detonates explosives to demolish structures or to loosen, remove, or displace earth, rock, or other materials.
- Inserts, packs, and pours explosives, such as dynamite, ammonium nitrate, black powder, or slurries into blast holes; then shovels drill cuttings, admits water into boreholes, and tamps material to compact charges.
- Compiles and keeps gun and explosives records in compliance with local and federal laws.
- Marks patterns, locations, and depths of charge holes for drilling, and issues drilling instructions.
- Measures depths of drilled blast holes, using weighted tape measures.
- Connects electrical wire to primers, and covers charges or fills blast holes with clay, drill chips, sand, or other material.
- Lays primacord between rows of charged blast holes, and ties cord into main lines to form blast patterns.