... trackwork Yields http://books.google.co.uk/books?id=kmBtBQAAQBAJ&pg=PA187&lpg=PA187&dq=newcastle+ manganese+ steel+ for+ railway+ trackwork&source=bl&ots=ReY4HfpwVh&sig=njnq8Sfn94jITB7TcmtbkpztgWk&hl=en&sa=X &ved=0ahUKEwiWpovN7vbUAhXJCsAKHd6NDcQQ6 AEIQTAE#v =onepage&q =newcastle%20manganese%20steel%20for%20railway%20trackwork&f =true Sample page showing part of Castle Junction:[below, hopefully] Regards, Rodney Attachment: attach_2538_3111_image.jpeg 859 posted: 20 Oct 2017 12:50 from: Richie Kynaston Rodney, That's very interesting, many thanks. A bit before my time period, but all useful background, and the diagram of the Diamonds is superb reference. Unfortunately the link to the railway architecture website is giving a 404 error, could you check and see if it works on the original forum please? I've been playing around again this morning, and the curving platforms are causing me some hassles, but I'm coming to the line of thinking that ...