excavator during excavation at construction site. backhoe on foundation work in sand pit. groundworks, site levelling,

backhoe civil engineering construction site contractor deep foundation demolition development dig digger diggers ditch drainage drill earth moving earthworks economic economy equipment excavating excavation excavator ground groundworks heavy hydraulic industrial industry job loader machine machinery piling preparation reinforced concrete beams road works rock sand scoop sewage shovel levelling sky trench vehicle work