Mining and mineral exploration companies in Canada must follow specific guidelines for disclosure, designed to improve the accuracy and integrity of the information they provide. National Instrument 43-101 Standards of Disclosure for Mineral Projects governs a company's public disclosure of scientific and technical information about its mineral projects.

National Instrument 43-101 Standards of Disclosure for Mineral Projects

This instrument governs disclosure, including oral statements, written documents and websites. The disclosure must be based on information provided by a "qualified person" (as defined in NI 43-101). NI 43-101 requires a company to file a technical report at certain times, prepared in a prescribed format. In some circumstances, the qualified person is to be independent of the company and the property. A company is required to use specified terminology when disclosing resources and reserves.

2012 Mining Report

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In 2012, the BCSC published its first Mining Report. The purpose of this report is to summarize the findings of our mining technical disclosure reviews and to provide guidance and discussion on topical NI 43-101 issues that may be of interest to mining issuers.

Industry Standards & Best Practices

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Canadian Institute of Mining and Metallurgy (CIM) Resources
These documents are available on the CIM website. For your convenience, we have provided links:

Geological Survey of Canada
A qualified person estimating mineral resources or mineral reserves for coal may follow these guidelines:

However, for all disclosure of mineral resources or mineral reserves for coal, issuers are required by section 2.2 of the Instrument to use the equivalent mineral resource or mineral reserve categories set out in the CIM Definition Standards and not the categories set out in Paper 88-21. The CSA believes it is not reasonable to apply Paper 88-21 to foreign coal properties.

National Instrument 43-101 Presentations

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To help facilitate the transition to the new mining disclosure rules, staff have conducted several public presentations on the changes from the previous rules, which we made effective June 30, 2011.

Presentation Date Presentation Location
January 20, 2018  Mining Disclosure: What you need to know Mineral Exploration Roundup
December 5, 2013 NI 43-101 Topical Issues and Guidance Northwest Mining Association Conference
January 20, 2012 NI 43-101: What You Need to Know About the New Mining Rules Mineral Exploration Roundup
October 6, 2011 NI 43-101 Drawing a New Line in the Sand: Regulatory Expectations under the New Mining Rules Continuing Legal Education Society of British Columbia, Vancouver
May 21, 2011 National Instrument 43-101: What Has Changed CIM Conference and Exhibition, Montreal

Prospectus Pre-filing Reviews for Mining Issuers

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Beginning September 1, 2009, mining companies will have ability to apply for an advance review of their technical disclosure in order to facilitate the timely receipt of a short-form prospectus.

Investing in Mining

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Are you the manager of a junior mining company? You should be prepared to answer these questions from your investors.

NI 43-101: Mandated Filings on SEDAR

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If section 4.1 or 4.2 of NI 43-101 triggers a technical report, you are required to file the following documents in SEDAR:

  • Technical report(s)
  • Certificates of Qualified Persons (see s.8.1 of NI 43-101)
  • Consents of Qualified Persons (see s.8.3 of NI 43-101)

We remind filers that offering memorandums are not mandated SEDAR filings. We recommend that you file your offering memorandums and reports of exempt distribution using BCSC eServices. Technical reports, along with the certificates and consents of qualified persons, can be filed electronically by including them in one electronic document along with the offering memorandum.

Inquiries About Scientific & Technical Issues

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Contact Corporate Finance staff with expertise in scientific and technical issues related to mining and mineral exploration companies.

Christopher Collins, Chief Mining Adviser
Darin Wasylik, Senior Geologist
Victoria Yehl, Senior Geologist


Areas of Expertise

  • Provide scientific and technical advice to other professional staff and management in Corporate Finance division on issues related to mineral exploration, development and mining companies
  • Review continuous disclosure, prospectus, technical reports and other filings for compliance with NI 43-101. Proactively work with and make presentations to issuers and mining professionals to ensure they are aware of and to assist them in understanding and complying with the requirements of NI 43-101
  • Work cooperatively with Canadian stock exchanges on the application, interpretation and enforcement of NI 43-101
  • Participate in the CSA Mining Technical Advisory and Monitoring Committee which is a forum for continuing communication between the mineral industry and the CSA
  • Through the CSA Committee on NI 43-101, Corporate Finance staff liaise with the other securities commissions to ensure consistent and uniform application of the rules for scientific and technical disclosure on mineral projects

See also our Frequently Asked Questions on Mining.