Steam Locomotive Information The Steam Locomotive Information Site Mountain Ash Colliery No. "Sir John" Cynheidre, Carmarthenshire, UK Photo Copyright © Royston Morris Click to Enlarge Wheels: 0-6-0ST Builder: Avonside Engine Co. Ltd. Build Date: Unknown Construction No.: 1680 Empty Weight: Unk Weight on Drivers: Unk Driver Diameter: Unk Tractive Effort: Unk Boiler Pressure: Unk Cylinders: Unk Fuel: Coal Gauge: Standard Location: Llanelli & Myndd Mawr Railway Status: Stored Views: 560 This site and its content Copyright © 2014, by Douglas C. BaileyImages and Video Clips © by the photographer/videographer indicated. Used by permission.