Average grades, length and depthA tip for investors therefore is...

Average grades, length and depth

A tip for investors therefore is to consider a company’s average grades and look for drill cores that “start and end in mineralisation” rather than buying shares on just one excellent drill core result, as well as the scale of the deposit.

A useful method to consider this is to work out grams x metres.

For example, one company may report a bonanza grade of 50g/t over 4 metres, equalling 200 gram-metres.

However, another may report 2g/t over 300 metres, which works out to 600 grams-metres.

I have been using this method for many years (ascertaining "drilling" results).... look for OVER 100, with some not far under 100.
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https://unauthorised investment advice/resources/making-the-grade-what-to-look-for-in-gold-and-silver-drilling-results/