jcb js130 bog master Our 13-ton specialist Low Ground Pressure excavator can be used on bogs, Wind Farms, Landscapers and those needing to work in soft terrain. Komatsu pc350 excavator Our 35 ton excavator can be used on Quarry operations, Land clearance, and large groundwork contractors. rock breaker to suit pc350 Our rock breaker attachment can be used for Quarry work, rock breaking, Concrete clearance etc.