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Polyus begins drilling operations at Sukhoi Log

Published by
Global Mining Review,

PJSC Polyus, the largest gold producer in Russia, has announced that its subsidiary company, LLC SL Gold, has started a 180 000 m drilling campaign at its Sukhoi Log deposit, one of the world’s largest undeveloped gold deposits and the biggest gold greenfield project in Russia.

The campaign, which is scheduled to last two years, will provide the basis for Polyus to update the block model for the deposit and for both ore reserve and measured and indicated mineral resource estimates in accordance with the JORC Code.

In early 2017, based on historical drilling results, AMC Consultants Pty Ltd generated a 3D resource block model estimating Sukhoi Log’s total inferred mineral resources at 58 million oz, grading 2.0 g/t. This block model has provided the basis for the design of the drilling programme and borehole locations. 

The 180 000 m diamond drilling campaign includes 50 000 m of verification drilling and 130 000 m of in-fill, geotechnical, geometallurgical and hydrogeological drilling works.  The drilling campaign has started at three drill rigs at the site. In February 2018, three additional rigs will come into operation to increase the drilling fleet to six drill rigs for the duration of the drilling works. 

AMC Consultants will oversee the drilling to ensure compliance with JORC Code requirements and will provide an updated ore reserve and mineral resource estimate.

The verification drilling is scheduled for completion in July 2018. Its primary aim will be to reconfirm the results of historical drilling data, which is based on 324 000 m of diamond drilling carried out between 1961 – 1999, and to verify the geological interpretation of the deposit.

Following completion of the verification stage in July 2018, the resource block model will be updated with the new drilling results to determine estimates for measured and indicated mineral resources. 

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Russian mining news