- Highland Gold Mining has announced upgraded resource and reserve estimates for the Novoshirokinskoye mine following a new JORC audit by Wardell Armstrong International.

The new JORC resource audit follows a comprehensive resource re-evaluation under Russian GKZ standards, completed in 2014.

As part of that exercise, Novo's cut-off grades were substantially lowered, resulting in lower average grades but higher tonnages and contained metal. For the purposes of modelling, WAI calculated a lead metal equivalent grade for Novo's polymetallic ore in its report.

Prices were based on a trailing three-year average as of January 2017, and actual recovery data was supplied by Highland Gold.

Using the same parameters to calculate gold equivalent, total proven and probable ore reserves as of 01 Jan were 1.9 M oz Au Eq., compared to 1.1m oz estimated to remain from the prior reserve audit conducted in 2011 and reported in the company's 2016 annual report.

Total ore reserve tonnage was 18.0m tonnes versus 3.4m tonnes previously reported.

The average gold equivalent grade was 3.3 g/t, compared to 9.8 g/t reported earlier and an average grade of 5.5 g/t processed at the Novo mill this year to date. Novo's measured, indicated and inferred mineral resources as of 01 Jan were 3.1m oz of gold equivalent versus 1.4m oz Au Eq. reported earlier.

The resource grade was 4.0 g/t Au Eq. (previously 7.6 g/t) and the total ore resource was 24.1 m tonnes (previously 5.7 m tonnes).

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