excavators digging

architectural background bag base bucket building cement closeup concrete construct construction constructional crane crash crawler dig digger digging dirt drag dredge dredger earth engine engineering environment equipment equipping excavating excavator facility foundation grab groundwork heavy hopper machine machinery mine mineral minerals mining mover navvy orange outdoor people person pile power products rock safety scoop shovel site soil stack stacked stone stones structural subgrade tackle technique technology toft track tracklaying work worker workers working yellow