{HEAD ~ control means} for applying hydraulic fluid to said motors for rotating said screw conveyors, for regulating {TAIL ~ the operation} of the belt conveyors in the hopper truck, and for shutting off hydraulic fluid to said motors when the hydraulic pressure exceeds a predetermined valve 
{ HEAD ~ control means } for applying hydraulic fluid to said motors for rotating said screw conveyors , for regulating { TAIL ~ the operation } of the belt conveyors in the hopper truck , and for shutting off hydraulic fluid to said motors when the hydraulic pressure exceeds a predetermined valve
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH