{TAIL ~ The apparatus} 15 wherein said means for changing the orientation comprises a flange surrounding the periphery of each scrubber section, said flange including holes therein adapted to receive bolts which pass through {HEAD ~ the corresponding flange} in the other scrubber section 
{ TAIL ~ The apparatus } 15 wherein said means for changing the orientation comprises a flange surrounding the periphery of each scrubber section , said flange including holes therein adapted to receive bolts which pass through { HEAD ~ the corresponding flange } in the other scrubber section
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