A mobile vehicle is disclosed having a boom pivotally mounted thereon for slewing about a vertical axis and a work head attached to {HEAD ~ the free end} of {TAIL ~ the boom} by a universal mounting 
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A mobile vehicle is disclosed having a boom pivotally mounted thereon for slewing about a vertical axis and a work head attached to { HEAD ~ the free end } of { TAIL ~ the boom } by a universal mounting
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH