I've forgotten what it's like to remember. I've lost the mindless confidence that a moment, an idea, a thought will be there for me later, the bravado of breezing through experience in the certainty that it will become part of my self, part of my story.
Fiction about mining has a long tradition - Emile Zola's 'Germinal' and Upton Sinclair's 'King Coal' come to mind - and most readers will be aware of the industry's harsh conditions.
I used to be able to think. My brain's circuits were all connected, and I had spark, a quickness of mind that let me function well in the world.