Hi Paul and Brian
I have pondered over Elson Siding. I thought like you that it was off the Oswestry line at the west junction of the triangle. But the triangle was taken out of use a long time ago whereas the WTT shows a morning and afternoon 'pilot' shunt to Elson Siding as late as 1962. Having just googled Elson I noticed a reference to a wharf and siding for Elson Brick Works (Duddleston Road) in the National Archive. Don't know what that was or when! I did wonder about including the moves in my operating sequence but decided it was a complication too far for my operators. As far as I know the loco propelled the vehicles with a brake van at the front. I planned to send a couple of vans in the morning and bring them back in the afternoon.
As far as buildings are concerned - I based my Goods shed on the ones at Bettisfield and Llanfyllin which were very similar and are still standing. My signal box is adapted from measurements and brick counts of Pwllheli box and photos of Ellesmere box. The stable and weigh office are based on the photos in Derek Lowe's book (not always easy to count bricks from a black and white photo!) whilst everything else is guesswork. I think my Up platform shelter is a bit on the small side in retrospect.
Hope that's useful.
Many thanks for the reply, looks like the magnifying glass is going to have to come out!
Elson sidings is becoming quite a conundrum for a location meriting two trains a day (OK trains might be labouring the point!)! Agree that the triangle was abandoned many years ago, I was looking at the 25 inch 1920's map which clearly show the earthworks and the access to the "factory" crossing nearer the Welshpool line end of the triangle. Starting to look a little further away (like the next two sheets) success - I hope!
If you look toward the right hand side of this sheet https://maps.nls.uk/view/121148207 you'll note what is (hopefully) the brickworks with sidings. There is what appears to be a run round ability making the shunting move rather odd but possibly there wasn't room for more modern motive power?
Only downside is that the site seems to have been in the midst of nowhere and I can't trace any road names. Also there is absolutely no trace on Google as site seems to have been ploughed back to fields.
Interesting additional detail on the crane "problem", a case of getting a bigger hammer methinks :-)