unloading concrete rings for the construction of wells and sewers top view

agrimotor arm backhoe bucket bucketful building bulldozer canalization concrete concreted constructing construction delivery dig digger dozer draw earthwork excavate excavation excavator gear hydraulic job lifting loader machine machinery materials mechanical meeting pail pipeline rings road sand scoop sewage sewerage sewers shovel site sump top tractor transport transportation truck unloading view well wells work works