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13.3

GREASE TABLE TAILINGS AUDIT PROGRAM

In order to confirm that the recovery plant circuit at Shore’s process plant facility was working efficiently and that no diamonds of significance were being missed in the recovery process, grease table tailings bulk sample bags from both the underground sampling and the LDD mini- bulk sampling programs were shipped to MSC for tailings audits with recovered diamonds being added to the Shore diamond database.

For each sample shipment, the grease tailings samples were secured in one cubic metre-sized Enduropak® bulk sample bags. A sample submission sheet (with the original copy of the sample submission sheet filed) was completed and the bulk samples were secured for off-site shipment by a transport carrier. The bulk samples were then freighted by the secure transport carrier to MSC.

When a grease tailings audit sample submission was expedited, a spreadsheet file containing the following sample information was completed:

  • sample submission number;

  • sample batch number;

  • grease tailings sample number;

  • security tag numbers;

  • sample type (grease table tailings);

  • type and size of shipping container (bulk bag);

  • gross weight (wet) in kgs; and

  • analysis type (i.e. recovery of free and locked diamonds >0.85 mm).

The information contained in sample submission sheets provided to MSC were as follows:

  • sample submission number;

  • grease tailings sample number;

  • security tag numbers;

  • sample type (primary grease table tailings);

  • type and size of shipping container (bulk bag);

  • gross weight (wet) in kgs; and

  • analysis type (i.e. recovery of free and locked diamonds >0.85 mm).

Upon reception, MSC verified that the chain of custody documents (i.e. sample submission sheets) were cross-referenced with the bulk sample bags, that the bulk sample bags arrived intact and that none of Shore’s security features showed signs of tampering.

Once all of the security checks were completed, MSC then carried out the following laboratory audit test work methodology:

  • wet screen the sample into 3 fractions (-6 +4 mm; -4 +2 mm and -2 +1 mm);

  • record the weight of the -6 +4 mm fraction (wet) and sort for diamonds under 10X magnification;

  • dry the remaining two fractions in drying ovens and record the weight;

  • remove ferromagnetic minerals using a Carpco Model MOS (10) 111-15 separator. Record the weight of the ferromagnetic fraction;

P&E Mining Consultants Inc. NI 43-101 Technical Report No 159 Shore Gold Inc. - Star Diamond Project Resource Estimate Update

Page 63 of 109

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