turquoise sand mining construction machine with conveyor belt. excavator stands in a sand pit with heaped up dunes. sand mining in

construction machinery equipment industry machine tractor sand mining automobile transportation excavator road bulldozer car heavy industrial field dirt world old job work blade blue brown bucket building construct contractor conveyor belt dig digger earth earthmoving excavation farm ground hydraulic crafting turquoise stands pit heaped dunes germany silicon semiconductor concept belt dunes germany raw material