Complex sentence: During the 1980s the yards were rationalised to the basic shape seen today, mainly due to the workflow at the depot which now consists coal from Yorkshire and Nottinghamshire being transported via Toton to the local power stations.
Split into simpler sentences: During the 1980s the yards were rationalised to the basic shape that they are today. Mainly due to the workflow at the depot which dealt with coal from Yorkshire and Nottinghamshire being transported to Toton and then to the local power stations.