Hello everyone,   Thought I would start a topic on the companies railway systems they ran at Coulsdon quarry and Croydon.   Would anyone have photos or information on the system and locos used?   They had a very interesting mc Laren traction engine type loco which a article appeared in brm magazine many years ago on building it, anyone remember which one it is?   http://leedsengine.info/leeds/photo.asp?phby=www.leedsengine.info&photo=/leeds/images/J%20H%20McLaren/jhm%201547%20locomot