Do we have any coal miners on the forum?

I'm trying to find some coal miners to speak to, either active or retired. I'm looking to gain some insight as to what it's like to work underground. This is just one of two different opportunities I have available at the moment. Presently, I work on a sand and gravel producing dredge on the Ohio River. As such, I'm familiar with some of the same equipment that may be found in a coal mine.

I'm trying to weigh my options between a career change, or a promotion at my current job. The goal is to cut down on hours spent away from home and family, but I'm not sure if that's worth going underground. I'd like to thank anyone in advance for any advice they can offer.