multiple machineries working on construction site. details of excavators working on site

multiple machineries working construction site details excavators bulldozer excavator dumper truck tractor machinery wheel loader quarry quarrying heavyduty excavation industrial concrete rocks machine openpit ore activity backhoe boring bucket blade building construct earthmover digging equipment manufacturing technology engineer engineering gravel highway hydraulic industry loading mover moving mining sand unloading process scoop transport transportation works vehicle work