Sidney Resources Corp (SDRC)

[gitreal]

The fact you ask means you are at least considering that I have the education and experience to know what I am talking about. When it comes to splitting samples versus concentration of samples, how you back-calculate the grade from a concentrate result, and what is statistically valid for bulk sampling.....I know what I am talking about.

We haven't even touched on the problems sampling placer material, or the problems with sampling dump/stockpile material from a lode mine. Or the problems of sampling a vein system in-place (preferably channel sampling across the vein at regular 5 or 10-foot intervals). Or even better, drilling.

For one thing, nobody would assay a 1-ounce concentrate sample from a placer mine (or stockpile). A concentrate is never really homogenous, by its very nature. Instead, you'd run a known weight of material through your test setup (sluice box), and then weigh how much gold you recover, and then do the math. For example, if you run a 500 pound test run of placer material, and end up with 0.3 grams of gold, your placer material runs about 1.2 g/ton (4 X 0.3). No assay involved. BTW, the bigger the test run, the better. And for a really big stockpile, run bulk samples from multiple locations. Again, no assay involved.