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Gold/Mining/Energy : BET YOUR ASSAY - Mining Terms Explained -- Ignore unavailable to you. Want to Upgrade?

To: strenlich who wrote (250)	11/6/1997 11:43:00 PM
From: Walt	Respond to of 463

I think you may be confusing assays, metalurgical reports and mill tests and/or actual recovery proscesses. Assays are just to tell you what is in the rock/material. Ie how much gold or silver, copper etc. Its an exploration tool. Once you think you have a mine or ore body you would take a bigger representative sample and get a metalurgical report.It would basically tell you what is in the rock, how it occures, its size and various ways one might recover it. If you had alot of free gold say 80% then by simple grinding and mechanical means you might be able to recover 90% of this, the last 20% might be tied in with sulphides and require roasting etc. Then someone has to design and set up an actual mill run the stuff through and see what your recovery is vs your cost. So you want the best assays possible and might try different methodes but that is alot different then your actual processing of material. Not sure weither I have helped or confused you. No doubt Charters will be able to explain it better.

To: strenlich who wrote (250)	11/10/1997 5:34:00 PM
From: Jim Steel	Read Replies (1) \| Respond to of 463

Not usually. You normally assay for everything under the sun and then get lost in the detail of what is significant. I guess you could say that a company using the best assay method for gold and/or silver without regards for other processes for either whole rock, minor metals, trace elements, column leach etc etc is more interested in mining the market rather than mining the rock. If you can get the company to send you raw assay data, then you can backcheck their releases to see how their higher grade intervals are calculated. Companies that will supply raw data to investors are respectable companies with nothing to hide, although you may have to prove to the company that you know what to do with it. Regards, Ujina