Publications

Can I Use Historic Assay Data in My Resource Estimate?

by B.T. (Terry) Hennessey | Jul 28, 2017

Can use be made of old or historic assay data in a current mineral resource estimate? The amount of data involved may be substantial and duplicating it could cost hundreds of thousands or even millions of dollars. Clients usually wants to use as much of it as possible. What can be done to complete best practices data verification and justify its use?

When is a Reserve a Reserve?

by B.T. (Terry) Hennessey | Mar 6, 2017

When is something “economically mineable” for the purpose of reporting a mineral reserve? Beyond requiring the use of certain reporting codes, NI 43-101 does not specify a methodology for the estimation of mineral resources or reserves.

Mineral Resource Reporting – Differences between CIM, JORC, and Others

by Tania Ilieva | Sep 1, 2016

Cut-off Grades for Mineral Resource Reporting

by B.T. (Terry) Hennessey | Jul 13, 2016

Under the CIM Standards on Mineral Resources and Reserves – Definitions and Guidelines, a mineral resource must be in “such form, grade or quality and quantity that there are reasonable prospects for eventual economic extraction”. The implications of this for the selection of a cut-off grade are discussed in this article by Micon’s V.P. Geology, Terry Hennessey.

Quality Control and Quality Assurance Programmes: A Priority, Not an Afterthought

by Hannah Davies | May 14, 2016

Classification of Mineral Resource Estimates

by William (Bill) Lewis | Apr 13, 2016

In the first of a series of articles on best practice DOs and DON’Ts, Bill Lewis, senior geologist with Micon in Toronto, highlights the need to tread carefully when classifying Mineral Resources. The classification of Mineral Resources is an important factor in the analysis of risk on advanced mining projects, and implementing best practices in this area can improve the probability of a successful mine development.

Due Diligence Reports – an IE’s Perspective

by Chris Jacobs | Apr 25, 2017

The mining consultant, or Independent Engineer (‘IE’) can provide the expertise needed to assess the full range of technical risks and opportunities associated with mining projects. on behalf of the potential investor.

NI 43-101 Technical Reports: What They Are, and What They’re Not

by William (Bill) Lewis | Nov 1, 2016

The Role of Environmental Baseline Studies in Mining Projects

by David Makepeace | Jun 2, 2016

Continuing the theme of ‘Best Practice’, Micon’s senior geologist and environmental engineer David Makepeace, B.Sc., MMSA, describes the key features of an Environmental Baseline Study.

Continuity in Mineral Resource Estimation

by William (Bill) Lewis | May 4, 2016

In the second of a series of articles discussing best practice, we focus on the importance of continuity within a mineral resource. The first article covered the classification of resources. Continuity lies at the heart of that discussion and, from Micon’s point of view, is one of the most important but one of the most frequently overlooked issues when conducting mineral resource estimates.