Call me a jaundiced old fart but this is a recipe for a rather nasty bout of silicosis.
Frankly, if you have to do it- get someone else to suffer. ( Sorry but some don't care)
Somewhere in the 'knitting' here, I said that I was brought up where men used water jets to win coal- and my generation of classmates is basically crippled or wiped out.
I hope my comments are constructive and that you don't join that dreadful, lingering and choking existence that precedes premature death.
In a few days, I'll be 85. Of course, I did become exposed to a lesser degree and suffer a bit but I'm still here.
I moved on.
Norman