dumper trucks working on highway construction site, loading and unloading gravel and earth. heavy duty machinery activi

activi activity asphalt building clay compactor construction development dirt dredger dumper dumping duty earth earthworks engineer engineering equipment foundation freeway gravel heavy heavyduty highway hydraulic industrial industry landfill loader loading machine machinery maintenance mover process quarrying repairing road roadworks site soil structure technology tools tractor transport transportation truck trucks unloading working workplace