I come from a long line of coal miners:
1. died 1824 - aged 25 (I believe a mining accident but nothing to substantiate)
2. His son - died 1879 aged 59 - non-mining accident
3. His son - died 1904 aged 61 - crushed by a wagon at pit bottom
My grandfather died aged 75 of heart attack having retired 5 years previously. My father died aged 80 of heart attack having retired in his early 60s.
It would depend on the type of coal mine - open cast or deep mine and the occupations and, in most cases, just luck

My father was working at the coal face in the late 1940s when a large boulder fell on his workmate next to him. All the men on the shift struggled to rescue the man but he died.
My uncle had chronic 'coal miner's lung' /'dust'(silicosis) and died in his late 60s. another uncle died at the age of 95.
As Stan says, it's very difficult to get information from before 1837. The coal mining history site might have something:
http://www.cmhrc.co.uk/site/home/Regards
Gadget