activity, asphalt, barrier, bolts, bridge, builder, building, city, concrete, construction, drill, drilling, engineering, equipment, helmet, impact, industrial, industry, installation, jackhammer, job, labor, laborer, machine, maintenance, man, manual, mechanical, men, occupation, pavement, paving, people, profession, repair, road, shovel, site, street, teamwork, tightening, tool, tools, uniform, urban, work, worker, workers, workman, workwear