small crawler excavator digging bucket on construction of high-speed bypass road to laemchabang port

activity asphalt backhoe bucket build bulldozer bypass civil concrete construction crawler development dig digger digging dirt duty earth earthmoving engineering equipment excavation excavator gravel ground heavy high highspeed highway hydraulic hydraulics industrial industry laemchabang loader machine machinery mover port repair road sand scoop shovel site small soil speed stone tractor transport unloading vehicle work worker yellow