Gold and Silver Juniors, Mid-tiers and Producers Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Gold/Mining/Energy : Gold and Silver Juniors, Mid-tiers and Producers

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: hank2010 who wrote (34319)	2/27/2007 5:52:07 PM
From: E. Charters	Read Replies (1) of 78420

It's a thot. I figure with the new sinking stages about, that an auto sinkhole, uphole machine is not far away. 32 drill heads and hydraulic breakers. I have to finger on a way to swing the drill heads out of the way and swing the breaker heads in. And then the vacuum units. Perhaps a tool selector mechanism. I think they are wasting effort in applying 100,000 lbs /sq inch force to massive grinding units( the tunnel borers and continuous miners). If they concentrate the shear force after opening faces and exposing beam-force concentrating leverage, it will take maximal advantage of the weakness of rock in tension. As it is the tunnel borers are fighting compressive strength, where rock is strongest. I observed Italian quarrymen who by using closely spaced holes, hand wedges, 'cracking' charges and diamond wire saws, extractedg 75 ton blocks by minimal applied effort. I figure this process could be applied with some changes to short advance breaking by max drilling and using the same principles of crack propagation. ************************

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next