Pierre River Mine Project

MINING AND PROCESSING ERCB SIRS 3 – 38
Question No. 10
Section 4.1
Request Volume 1, Section 10.1, Page 10-66, Supplemental Information Responses;
Volume 1, Section 3.1, Page 3-1, Table 3-1, Supplemental Information
Responses.
Shell states, “The top of the ore surface was modified to exclude any ore
stringers of 3 m or greater that were separated from the main orebody by a waste
band more than four times as thick.”
10a Is the resource in the 3 m or greater ore stringers included in the ore volume
tabulated in Table 3-1?
Response 10a The statement “The top of the ore surface was modified to exclude any ore
stringers of 3 m or greater that were separated from the main ore body by a
waste band more than four times as thick” was incorrect. The statement should
have read “Both the top and bottom of ore surfaces were used unaltered to
calculate ore volumes.” The resources tabulated in Table 3-1 include all
resources within the lease area located below the topographic surface. For
additional information, see Section 2.3, Supplemental Information Errata.
Request 10b What is the quantity and grade of resource in the 3 m or greater ore stringers?
Response 10b This question is no longer applicable. See the response to ERCB SIR 10a.
Request 10c What contingency will Shell use to offset the loss of the resource associated with
not recovering the 3 m or greater ore stringers?
Response 10c This question is no longer applicable. See the response to ERCB SIR 10a.
Question No. 11
Request Volume 1, Section 10.1, Page 10-68, Table 148-1, Supplemental Information
Responses; Volume 1, Section 3.1, Page 3-1, Table 3-1, Supplemental
Information Responses; Volume 1, Section 2.2, Page 2-18, Table 2-3,
Supplemental Information Responses.
11a Discuss the differences between “In Situ Bitumen” for TV/BIP Cut-off equal to
12 in Table 148-1, “Bitumen” volume for “Ore at TV/BIP ≤ 12” in Table 2-3
and “Revised” bitumen volume for “Bitumen in Place” in Table 3-1.
4-8 Shell Canada Limited April 2010
CR029