Ключевые слова: activity, america, amount, blender, build, builder, cement, civil, civil engineering, concrete, construction, contractor, delivery, dirty, driver, dry mix, dumper, engineer, equipment, exact, excavator, flow, foreman, foundation, gravel, load, logistic, machine, machinery, material, mix, mixer, mixing on site, operator, pile, reinforcement, roadworker, roadworks, sand, semi, semidry, site, survey, surveyor, tool, truck, uk, usa, volume, work,