by dcameron | Oct 1, 2025 | Bulk Density, Drill Hole Spacing, Exploration, Geostatistics, Grade Control, Mineral Resources, Production Reconciliation, QA/QC, Resource Classification
Following is a copy of the comments I submitted on the proposed changes to the Instrument, companion policy and Form 43-101F1. It is an opportunity to improve reporting standards which have been essentially unchanged for over a decade. September 18, 2025 To: British...
by dcameron | Aug 15, 2025 | All, Bulk Density, Exploration, Geo Logic, Measurement Systems, Mine Geology, Mineral Resources, QA/QC, Resource Classification, Sampling, Significant Figures
This is going to be a really boring read for any but the most habitual miners in the miniscule audience. Even if most of us economic geologist types will agree that rock bulk density is a neglected subject in all facets of exploration, mineral resource estimation and...
by dcameron | Apr 7, 2025 | Bulk Density, Measurement Systems, Mineral Resources, Significant Figures
It may seem like a mundane question, but do we report tonnage, grade and metal correctly and consistently in our public disclosures of mineral resources and reserves? I’ll venture that our public disclosures of mineral resources and reserves don’t always measure up....
by dcameron | Mar 12, 2025 | Bulk Density, Climate Change, Critical Minerals, Drill Hole Spacing, Geo Logic, Geostatistics, Grade Control, Mine Geology, Mineral Resources, QA/QC, Resource Classification, Significant Figures
Like it or not, we got a taste of the power wielded by overuse of the word “science” in this decade. Heretofore, some of us innocently thought that science was an abstraction, but we subsequently found out that it can be used as a club. While we can...
by dcameron | May 16, 2020 | Bulk Density, Grade Control, Mine Geology, Mineral Resources, Production Reconciliation
At first glance, reporting of grade and tons from underground face sampling seems like a no-brainer application of simple arithmetic in EXCEL, right? Yup, no argument there…except, how come it is almost always done incorrectly due to faulty formulas, faulty...
