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USA - Waterloo, Hog Heaven

Pan American Silver Corp. maintains its interest in two established silver deposits in the United States, acquired in 1994 and 1995 to give immediate leverage to silver.  Hog Heaven and Waterloo are investment properties that feature low holding costs and potential to add substantially to Pan American Silver's production when silver prices trend higher.

These properties are not considered to be material to the Company.

Historical Reserve/Resource Estimates
   
Unclassified
Tonnes
Grade
Silver (g/tonne)
Contained Ounces
 
  Hog Heaven (ii)
Historical (ii)(iii)
2,705,000
167
14,550,000
 
  Hog Heaven (ii)
Historical (ii)(iv)
7,639,000
133
32,730,000
 
  Waterloo (v)
Historical
33,758,000
93
100,937,000
 
  Total
Historical
44,102,000
104
148,217,000
 

NOTES: Mineral Reserves and Resources are as defined by Canadian Institute of Mining Guidelines Mineral resources do not have demonstrated economic viability.

This table illustrates Pan American Silver Corp's share of mineral reserves and resources. Properties in which Pan American Silver has less than 100% interest are noted next to the property name.

  • (ii) The historical estimate for Hog Heaven was calculated by Gregory Hahn, Chief Geological Engineer for CoCa Mines Inc., a previous owner of the property, in a report titled “Hog Heaven Project Optimization Study” dated May 1989, prior to implementation of National Instrument 43-101, Standards of Disclosure for Mineral Projects ("NI 43-101"). The historical estimate was based on extensive diamond drilling, and was calculated using a silver price of $6.50 per ounce and a gold price of $400 per ounce (these were relevant prices at the time of the calculation). Michael Steinmann, P.Geo., QP for the Company, has reviewed the available data, including drill sections, surface maps, and additional supporting information sources, and believes that the historic calculation was conducted in a professional and competent manner and is relevant for the purposes of the Company's decision to maintain its interest in this property. In the study, the historic estimate was sub-categorized as follows:
Category
Tons
oz/ton Ag
oz/ton Au
Proven reserves
2,981,690
4.88
0.018
Probable & possible reserves
904,200
10.40
0.020
Heap leach ore
316,100
1.56
0.014
Possible resources
4,500,000
2.41
0.020
Inferred resources
2,700,000
4.44
0.022

However, the Company has not completed the work necessary to verify the historical estimate. Accordingly, the Company is not treating the historical estimate as NI 43-101 compliant categories of mineral resources based on information prepared by or under the supervision of a QP. These historical estimates should not be relied upon.

(iii) The Company believes that the historical estimate category of "proven reserves" for Hog Heaven most closely corresponds to 2,705,000 tonnes in the NI 43-101 category of "indicated resources".

(iv) The Company believes that the historical estimate categories of "proven & possible reserves", "heap leach ore stockpile", "possible resources" and "inferred resources" most closely correspond to 7,639,000 tonnes in the NI 43-101 category of "inferred resources."

(v) The historical estimate for Waterloo was initially calculated by Asarco Inc. in 1968. In September 1994 Robert J. Rodger, P.Eng., reviewed the Asarco reports and prepared a Technical Evaluation Report on the Waterloo property, prior to the implementation of NI 43-101. The Technical Evaluation Report confirmed that the historical estimate was based on reverse circulation drilling and underground sampling, and concluded the estimate was based on sound methodology. The historical estimate at Waterloo was calculated using a silver price of $5.00 per ounce (the relevant price at the time of the calculation). Michael Steinmann, P.Geo., QP for the Company, has reviewed the Technical Evaluation Report and believes the historic calculation was conducted in a professional and competent manner and is relevant for purposes of the Company's decision to maintain its interest in the property. The Company believes that the historical estimate category of 37,235,000 tons (at 2.71 ounces per ton silver) of "measured and indicated reserves" most closely correspond to 33,758,000 tonnes in the NI 43-101 category of "indicated resource." However, the Company has not completed the work necessary to verify the historical estimate. Accordingly, the Company is not treating the historical estimate as NI 43-101 compliant categories of mineral resources based on information prepared by or under the supervision of a QP. These historical estimates should not be relied upon.

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