From: null@void.com   
      
   While on the topic - if you were renewing railway track in a mine,   
   expedience the only concern - what would you use?   
   The low rolling resistance and being able to simply push wagons to a   
   tonne weight along levels you cannot stick your elbow out in is   
   fundamentally advantageous.   
   Saw on a US website that still sell rails for mine railways.   
   For infrequent hobby use you would use?   
   Access into mine limited - no adit (horizontal) access nor sloping   
   decline - is shaft only.   
   Wondered whether you could lower flat bar (rectangular section) down the   
   shaft in long lengths and weld to steel "ties" to make a functioning   
   railway (not going to need expansion joints down there - not many frosts   
   and not much "solar gain" on heatwave days!).   
   Saw on a video a coal mine in Pakistan where they use angle-iron for   
   rails - shows rope-worked decline the wagons come to surface along.   
   Which I take it is cost-justified?   
   There are points / switches - cannot have double-flanged wheels to   
   self-stabilise track, for what it's worth...  And yes the tracks do   
   snake around with curves in following the lodes.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)