XPost: uk.railway   
   From: Anna@noyd-dryver.com   
      
   Phil Kane  wrote:   
   > On Wed, 27 Dec 2017 13:12:58 -0000 (UTC), Anna Noyd-Dryver   
   >  wrote:   
   >   
   >> After the old track and sleepers are removed, it appears from that picture   
   >> that the old ballast is being removed too, following which I would guess   
   >> that better drainage will be installed, then there's usually a membrane of   
   >> some kind to keep the sub-soil out of the ballast, this will be followed by   
   >> the new ballast and finally the new sleepers and rails.   
   >   
   > Thank you very much for that explanation of the work to be done.  What   
   > is not evident to me from the picture is whether the line was on   
   > elevated structure, on the surface, or underground - the last two   
   > would entail digging.  I am one-third of the way around the world and   
   > don't remember those details from my one and only visit to London 50   
   > years ago!   
   >   
      
   Even on an elevated structure, replacing the ballast will involve digging!   
      
   This picture posted earlier in the thread   
      
   clearly shows line in a cutting.   
      
      
   Anna Noyd-Dryver   
      
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