I think that was a case of an accidental good outcome, from bad policy. Better policy would have been safe mining techniques.
As a trade unionist and Thatcher hater myself, I still hold Scargill in contempt, because he had no idea how to fight for the workers in modern times. His methods were outdated and counterproductive. He wanted to preserve the old ways, and pit village life, when miners just wanted better pay and conditions, and the chance to buy a decent home somewhere nice.
Having said that, there is NO WAY I would let any member of my family go down the pit!!
My husband was brought up by his grandparents, and his Gran arranged a pit job for him at 15. He went down once, told the bloke to take him back up top the minute he saw where he'd be working. The man obliged, and Terry walked away. He was scared of his tough old Gran, but more horrified of the thought of working down there!!
(He ended up in a mill, then as an apprentice painter and decorator, then went to art college, then joined the Navy!!)