Complex sentence: The line was worked by eight stationary engines, rated at between, at Sunderland, Seaton, Merton, Appleton, Hetton, Moorsley, Piddington and Sherburn, and these pulled ropes up to long and between in circumference.
Split into simpler sentences: The line was worked by eight stationary engines at Sunderland, Seaton, Merton, Appleton, Hetton, Moorsley, Piddington and Sherburn. Rated at between, these pulled trains using ropes up to long and between in circumference.