TR  / RI-9246 <br/>
Richard L. Unger <br/>
       Underground coal mine track inspection and cleaning vehicle 
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<br><U>Copy Details:</u><br> Acc. No.: <b>TR6619</b>, Full Call No.: TR RI-9246,   Item type:  Technical Report , Location: General Stacks, <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>