MCSs of piston in crane mechanism, cables, boom top. Various parts of machine, upper part of heavy duty pavement breaker in operation. Cut to hands of operator on levers. MS of cable and TILT DOWN to winch. LAS up boom from driver's seat; and CUT to boom angle gauge. Several shots of several crane booms in same frame, of single boom, cables. Cut to hands of operator on control lever. CU of crane mounted on caterpillar moving slowly.