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 | Nov 20, 2022 | DIE Factor, Drill Hole Spacing, Geostatistics, Mineral Resources, Resource Classification
I’d like to introduce the patient reader and my clients to a conceptually simple tool that is useful for the assessment of resource risk. The Drill Hole Information Effect (DIE), as I propose to call it, is the observation that the deeper...
by dcameron | Feb 8, 2022 | Grade Control, Mine Geology, Mineral Resources
The mining industry has lost one of its best mining engineers with the death of James S Knowlson V this last January 2, 2022. Jim was the Chief Engineer at Anaconda’s Butte, Montana operations, starting there as an underground sampler in the late 60’s while he worked...
