SI
SI
discoversearch

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 Mining Stocks -- Ignore unavailable to you. Want to Upgrade?


To: Claude Cormier who wrote (835)4/25/2001 2:43:54 PM
From: russwinter  Read Replies (1) | Respond to of 4051
 
Claude or others,

What kind of cost formula per ton do you use to estimate various stripping ratios. For instance on surface mineralizations like El Moro and Vicuna where there are a couple hundred meters intervals (close to 1:1, versus a near surface skarn like Clarence Stream (4 or 5 to 1)?

Also in heap leaching operations a range of $5 to 8/ton is used to express a typical processing cost. What variables dictate where the final number may fall? Size of course is the main one, but any others?