On April 8, the Canadian Securities Administrators announced the adoption of final amendments to National Instrument 43-101 Standards of Disclosure for Mineral Projects, along with related amendments to various other instrument and forms. The CSA initially proposed changes to the instrument in April 2010 (see Ray McDougall's post on the proposals here) and the recently-published amendments reflect minor changes intended to clarify the initial proposals.

Generally, the changes are intended to make the mining disclosure rules more effective and cost-efficient without compromising investor protection. According to the CSA, among other things, the amendments eliminate or reduce the scope of various requirements, provide increased flexibility to mining issuers and qualified persons in certain areas and reflect changes that have occurred in the mining industry.

Assuming Ministerial approvals, the new instrument will come into force on June 30, 2011.