Pierre River Mine Project

MINING AND PROCESSING ERCB SIRS 3 – 38
Question No. 30
Section 4.1
Request Volume 1, Section 3.1, Page 3-1, Table 3-1, Supplemental Information
Responses; Volume 1, Section 10.1, Page 10-166, Table 218-4, Supplemental
Information Responses.
Table 3-1 indicates that revised data of Ore is 2,102 Mt. In Table 218-4, the
sand, fines, bitumen and water from extraction sum to 2,263.8 Mt.
30a Confirm the updated total ore tonnage. Update Table 3-1 or Table 218-4
according to the latest information.
Response 30a The mine quantities stated in the May 2009 Pierre River Mine, Supplemental
Information, were updated to reflect the revised pit limits and updated block
model. However, the mine production schedule and integrated tailings plan were
not revised because of the small (5%) change in total mine volumes. Table 3-1
(see the May 2009 Pierre River Mine, Supplemental Information, Volume 1)
provided a comparison of the revised ore tonnage to the ore tonnage in the
December 2007 application.
Table 218-4 in the response to SIR 218 provided additional details on the tailings
schedule submitted with the December 2007 Pierre River Mine, Project
Description, Volume 2. Therefore, it cannot be reconciled with the total mine
quantities from the May 2009 Pierre River Mine, Supplemental Information. The
extraction ore properties provided in Table 218-4 excludes breaker rejects.
Therefore, the breaker reject tonnage of 86 Mt must be added to the extraction
ore tonnes to reconcile with the 2,349 Mt of total ore reported in the Pierre River
Mine Project Description.
Request 30b Update the following tables:
i. Table 218-3: Supplemental Information Responses
ii. Table 7-5: Volume 2 of the Pierre River Mine Application
iii. Table 7-7: Volume 2 of the Pierre River Mine Application
iv. Table 7-8: Volume 2 of the Pierre River Mine Application
Response 30b The data was not re-calculated because the mine production schedule and
integrated tailings plan were not updated for the Project Update, as stated in the
response to ERCB SIR 30a.
The general mine scheme and sequence of the development will be maintained.
April 2010 Shell Canada Limited 4-29
CR029