jrhines
I did some work at the Queen's University explosives test
site back in 75. We were verifying effects on C4 and other
explosive products from different caliber bullets. Its been
quite a while but you could contact Queen's to see if they
have done any further testing. They did testing for...
Pimheinkool:
Any leakage of a tailings facility should be considered a
problem and demands attention without delay. Im not versed
in this but Jim Cassie a geotechnical engineer with BGC
Engineering out of Calgary did work on our tailings facility
in the Canadian arctic. He is very knowledgeable...
Mal:
You might want to consider looking from the other direction.
Can you access from u.g. and work upwards. Would need to
evaluate pillar required ( value of ore lost ) to the cost
of removing what you have above as it appears to be a major
undertaking. Do some order of magnitude first to see...
Holes drilled in development(jumbo rounds) or production (longhole drills) are done drilling dry. Dust collectors are mounted on the drill units. Cups are located at the end of the boom to capture the dust at the collar of the hole. If the cup doesn't sit properly ( face is very rough ) it can...
