You must be ~10 or 12 years younger than me, I seem to recall I had been working 2 or 3 years when it happened, & it was definitely on my long short list.
Vividly recall Harold Wilson visiting the scene a day or two later. And the then Chairman of the NCB (National Coal Board) Lord Robens handling it all so terribly, & denying responsibility.
I remember seeing it on the news, black and white TV still then. Just do very sad.
I'm 67, just a bit younger than that old fella Red Dog.