construction equipment construction vehicle danger Dirt equipment equipment hydraulics heavy duty hydraulics machine machinery mobility movement power strength hammer ancient antique handtool handtools hydraulic hydraulic tool iron old pipe wrenches plumb plumber plumbers rust tightening tool tools wrench wrenches boom construction crawler excavator heavy equipment parked tracks bucket crew detour fix loader maintenance pipe repair replace road track workers dig hoses isolated pivots teeth trench cage dirt mover driver heavy lift load operator tractor wheeled worker working cabin carrier carry carrying deck empty float haul haulage hauling heavy-equipment large length long low low-bed low-loader lowboy prime-mover semi-trailer street street-scene trailer transport transporter truck unloaded vehicle wheels width angles arm dangerous digger elevated elevation external height heights high lifting perspectives post-hole-digger power-pole raised raising replacement replacing risks risky safety service spiraling spiralling trucks up-high vehicles work