GREY:RNKLF - Post by User
Comment by
Pandoraon Oct 19, 2018 9:04pm
67 Views
Post# 28839330
RE:how many meters does 1 firing advance us?
RE:how many meters does 1 firing advance us?I am not really sure of how things are considered in a mine. I am not a miner.
I can go back to an experience in my youth which is now 60 years ago. I worked with miners drilling tunnels on the Trans-Canada Highway. A shift target was 12 feet with the drilling being done with jacklegs. Anything over 12 feet was eligible for a bonus. Needless to say the miners quite often got over 12 feet and sometimes made 15 feet.
If there is any relationship to that I have no idea. That blast was on a highway cut so about a 30 foot diameter face with the jacklegs being set on 3 levels on a large framework carried on a D8 cat.
Maybe completely out to lunch as a comparison but I will let the knowledgeable ones shoot holes in it.