 China clay deposits on Lee Moor were exploited and a branch of the P&DR was built to bring the mineral to Plymouth.The original P&DR line declined and its upper section was later adopted for a branch line, but the LMT branch, and a short section of the lower end of the P&DR, remained in use until 1960.The line crossed the important Exeter to Plymouth main line on the flat, and many photographs have been circulated depicting the incongruous sight of the horse-drawn wagons crossing the busy main line railway.