From: wb8foz@panix.com   
      
   John Albert  writes:   
      
      
   >Yes, George, they still use them.   
      
   >Blocks, or chocks.   
      
   >After you tie down a piece of equipment with the hand brake,   
   >you find something (wheel chock, or just a piece of wood)   
   >and wedge it between the wheel and rail.   
      
   Is there such a thing as a chock that is bolted to the rail; and   
   restrains a consist, not just a sole car?   
      
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