National Instrument 43-101.
Canadian regulatory instrument governing mining disclosures

Austral Gold reports Guanaco 14-year plan, $192.1M NPV
Austral Gold released a new NI 43-101 technical report for its Guanaco mine in Chile, extending the mine life to 14 years and validating substantial reserves and resources using existing processing infrastructure. The project shows an after-tax NPV of US$192.1 million at a 10% discount with all-in sustaining costs of US$2,114 per ounce of gold equivalent, supported by modest capex and typical recoveries for the operation.
Business · 10 sources · Jul 23, 2026Read itThe journal
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About National Instrument 43-101
National Instrument 43-101 Standards of Disclosure for Mineral Projects is a securities regulatory instrument that governs how companies can disclose mining-related information in Canada. Its rules aim to prevent companies from sharing inaccurate or misleading information about their mineral assets with prospective investors and the public. It is overseen and enforced by the Canadian Securities Administrators.
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