Apparatus for digging post holes and erecting posts

Apparatus for digging surface trenches in the ground

Apparatus for dredging from the stern of marine vessels

Apparatus for excavating a trench underneath a pipeline installe

Apparatus for excavating and transplanting trees and the like

Apparatus for excavating soil and the like using supersonic jets

Apparatus for excavation and earth removal from aquatic bottoms

Apparatus for forming a concrete wall

Apparatus for harvesting peat

Apparatus for mining nodules beneath the sea

Apparatus for positioning a drag nozzle carried by a suction tub

Apparatus for producing ski tracks for a ski trail

Apparatus for regeneration of skiing courses

Apparatus for removing snow from roadway

Apparatus for removing stakes from the ground

Apparatus for resurfacing a snow layer

Apparatus for sediment dredging and ocean mineral gathering

Apparatus for uprooting shrubs and the like

Appliance for dredging the bottom of a body of water

Appliance for dredging the bottom of a body of water