The top 486 VLB board would easily sell on ebay for far more than gold value. It looks to be in great shape.
... just saying.
Have you seen boardsort's website? They have examples of different grades and their payout. Using that it would give you a rough picture of how much gold there is in different grades.
http://boardsort.com/payout.php
The way to avoid being cheated is to take a representative sample (a science and art in itself) and let the company know that it was done. That way the refiner knows that the customer have a good sense of what the lot contains.
If you are dealing in big enough lots you should have a representative following the lot through fragmentation and sampling. Then four representative samples for the lot is taken and sealed. One sample is for the refinery to make an assay for payouts, one for the customer to assay and if the difference between the samples are too big then the two remaining sealed ones could be sent to a third party assayer to make a final assay that the payout is based on.
The best way to keep people honest is to let them know that you know.
Göran
... just saying.
Have you seen boardsort's website? They have examples of different grades and their payout. Using that it would give you a rough picture of how much gold there is in different grades.
http://boardsort.com/payout.php
The way to avoid being cheated is to take a representative sample (a science and art in itself) and let the company know that it was done. That way the refiner knows that the customer have a good sense of what the lot contains.
If you are dealing in big enough lots you should have a representative following the lot through fragmentation and sampling. Then four representative samples for the lot is taken and sealed. One sample is for the refinery to make an assay for payouts, one for the customer to assay and if the difference between the samples are too big then the two remaining sealed ones could be sent to a third party assayer to make a final assay that the payout is based on.
The best way to keep people honest is to let them know that you know.
Göran