From: none@none.com99   
      
   On 6/8/2024 12:31 AM, Richard Smith wrote:   
   > 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.   
      
   Angle / v-groove is common for rolling gates too.   
      
   --   
   Bob La Londe   
   CNC Molds N Stuff   
      
      
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