to be opened up when dislodging any rock that may be jammed as shown in fig1 the bucket conveyor also referred to as a lifting or elevation conveyor 66 has its housing 130 secured to an upstanding frame 132 with offset leg 133 which in turn is removably secured by bolting assemblies 131 to the slide frame 114 by using receiving structures 220 which are welded to the slide frame 114 the members 114 and 132 together comprise a slide frame structure a hydraulic motor 134 with its roller chain drive 136 and driving sprocket 138 powers the driven sprocket 140 inside the bucket conveyor 66 to thereby move the endless double pitch chain 142 its secured spaced plastic buckets 144 and the chain driven sprocket 146 these buckets 144 are moved through the debris being pushed and deposited by the cleaning conveyor paddles 48 to pick up a load of debris for its elevation and subsequent deposit on the longitudinal or belt conveyor 68 the housing 130 of the bucket conveyor 66 is equipped with a lower clean out door 150 and a top inspection and access door 152 also the housing 130 pivotally supports lower pivotal spring loaded door 124 which bears against the housing 104 of the digging conveyor 64 and it pivotally supports the hinged cover 126 which bears down on the top shroud or cover of the housing 104 of the cleaning conveyor 64 as shown in fig1 through 16 when the debris that.