There was an article in Rail magazine no 145 dated April 3rd - 16th that described the issue.
Basicly customers were finding contamination in their consignments of Clay.
This was established to be caused by the lining material on the CDA's coming off the sides.
The solution was to remove it which was done at St Dennis Junction sidings.
The first train ran on December 1st 1990 & the last one was due to run on 31st March 1991.
I hope this is of use.
I have the original article but assume I can't post it as it would infringe copyright.
I enjoy my daily visit to your informative & interesting site....Keep up the good work
Cheers Bill Douglas
Below are a few photos taken yesterday (Wednesday). around mid Cornwall.
1. 150202 sits in Platform 3 at Liskeard.
2. A quick stop off on the way back West as the sun was shining. 43004 + 43153 cross St Pinnock Viaduct in the colourful Glynn Valley working 2A84 1109 St Austell to Plymouth.
3. Lastly a venture though the woods at Fowey sees 66190 waiting to unload it's 7 JIA wagons bought down on 6G19 1232 Goonbarrow Junction Dbc to Fowey Dock Carne Point. Less wagons are used on Wednesdays as the others get loaded at Par Harbour in the morning.
A set of pictures from 39 years ago of the Exeter Central re signalling scheme. The first phase of MAS installation in the Exeter area.
All Exeter to Waterloo trains were terminated/started at Pinhoe or Honiton, Exmouth train terminated/started at Polsloe Bridge. Empty stock was stabled at Exmouth Junction. A mini temporary panel was installed in the signal box until 3rd of May 1985 when the new panel at St Davids was operational.
More to follow
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45062 Exeter central re signaling 27 October 1984.jpg
45062 on the rear of a ballast train Exeter Central resignalling 27 October 1984.jpg
45062 on the rear of the ballast train Exeter Central 45036 was on the other end 27 October 1984.jpg
Exeter central looking east 21 October 1984.jpg
Looking down the bank Exeter Central 20 October 1984.jpg
Old and new signals Exeter Cenral B box in the background 20 October 1984.jpg
Found in the Jamaica Inn Farm Shop.
The Brewery is in Grampound apparently. In the old days, the stuff could have gone by rail.....
Cheers! Trevor T