General   (General discussion, talk about anything.)

Owd Codger -

"Correct, most of coal mining in Lancashire was in the South Lancashire Coalfield centred on Walkden Yard " ??????

No! Wogdin Yard came under Central Lancashire coalfield.

"where there was a locomotive depot and railway lines to the surrounding collieries to collect wagons for the supply of coal to local power stations" ??????.

It was the workshops for Manchester area collieries.
Haydock served South Lancashire collieries.