National Instrument 43-101

National Instrument 43-101 (NI 43-101) is a rule developed by the Canadian Securities Administrators (CSA) and administered by the provincial securities commissions that govern how issuers disclose scientific and technical information about their mineral projects to the public. It covers oral statements as well as written documents and web sites. It requires that all disclosure be based on advice by a "qualified person" and in some circumstances that the person be independent of the issuer and the property. 

A qualified person (QP) as defined in NI 43-101 as an individual who: 

a) is an engineer or geoscientist with at least five years of experience in mineral exploration, mine development or operation or mineral project assessment, or any combination of these;
b) has experience relevant to the subject matter of the mineral project and the technical report; and
c) is a member in good standing of a professional association. 
NI 43-101, together with its Companion Policy 43-101CP and Form 43-101F1 Technical Report can be downloaded from the Canadian Council of Professional Geoscientists web site. 

NI43-101 brings with it certain rules that cannot be contravened. For example when a news release is issued you will often see these words "potentially economic value" in the news release. It  is because they do not have a feasibility study on the property, and so without using the word "potentially" they would be in violation of 43-101.