| Descriptors |
Emergency measures, Silt, Blasting, Sand, Structural timber, Soil surveys, Soil mechanics, Hoists, Protective clothing, Tunnelling equipment, Structural design, Soils, Excavating, Lifting equipment, Explosive atmospheres, Compressed air, Surveying, High-pressure-atmospheres hazards, Chalk, Safety engineering, Fire extinguishers, Air locks (entry-exit), Tunnels, Tunnelling, Road safety, Dust control, Gravel, Underground explosions, Fire risks, Industrial trucks, Rocks, Ground water, Lighting systems, Electrical safety, Safety measures, Construction operations, Accident prevention, Mine shafts, Site investigations, Floods, Fire-damp, Methane, Soil improvement, Occupational safety, Conveyors, Toxic gases, Ground-water drainage, Legislation, Clay, Rail safety, Loading (materials handling), Explosions, Noise control (acoustic), Ventilation, Railways, Firefighting equipment, Training, Fire safety, Cranes, Dust, Flammable atmospheres, Signals, Transportation safety
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