Esholt Sewage Works Railway

Esholt Sewage Works Railway was a standard gauge works railway constructed in 1910 to serve a sewage works in Esholt, West Yorkshire, England. The works were built to remove wool-grease and other wastes from effluent coming out of the many mills of the Bradford woollen district. At its peak, the railway extended to 22 miles (35 km) of track served by 11 locomotives, as well as a shorter section of narrow gauge railway served by three engines. Trains were employed to remove solid waste from the site; several of the engines were converted to run on oil derived from recovered wool-grease. The railway was closed completely in 1977, but the sewage works continues to operate.