The hole broke through on target in the middle of an 8-ft-wide drift. Subsequent verification by laser beam indicated a total deviation of just 0.75 inches or 0.01%. The 8.5-inch pilot hole, to be reamed later to 5-ft diameter, was...
You've reached your limit of free weekly articles
Keep reading The Northern Miner with a TNM NEWS+MARKETS Membership.
TNM Memberships is your key to unlocking access to the best news, insights, and data in the mining industry.
Get Started with a free 14-day Trial ** Credit card required to begin free trial. Your card will be charged 14 days from signup. You will receive an email notification seven (7) days before the free trial period ends.
Already a Member?
Sign in
Subscribe for Unlimited Access
Enjoy unlimited News Stories and Specialty Digests, along with Mining and Metal Market insights as part of your NEWS+MARKETS Membership. Or go even deeper with our Global Mining Data platform, TNM Marco Polo, included with your NEWS+DATA Membership.
Explore Full Membership Benefits