Complex sentence: The Woodhead Line was busy with freight traffic, especially with coal traffic from South Yorkshire to Lancashire power stations such as Fiddlers Ferry, and a large marshalling yard was built about a mile east of Guide Bridge at Dewsnap.
Split into simpler sentences: The Woodhead Line was busy with freight traffic, especially with coal traffic from South Yorkshire to Lancashire power stations. A large marshalling yard was built about a mile east of Guide Bridge at Dewsnap.