Norzinc Ltd. (NORZF)

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Canadian Zinc Corporation: Mineral Resources Confirmed and Upgraded at Prairie Creek Mine

Tuesday October 9, 12:18 pm ET

VANCOUVER, BRITISH COLUMBIA--(MARKET WIRE)--Oct 9, 2007 -- Canadian Zinc Corporation (Toronto:CZN.TO - News)(OTC BB:CZICF.OB - News)(Frankfurt:SRS.F - News) is very pleased to report the results of the new Mineral Resource estimate on the Main Zone at Prairie Creek Mine. The new estimate, which was independently prepared by MineFill Services Inc. in compliance with the standards in National Instrument 43-101, verifies and confirms the previous historical resource estimate completed by MRDI in 1998.

Significant upgrades in resource categories have been recorded as the new estimation includes the results of the first phase of the 2006/07 underground drilling campaign. Phase I of the program, completed in July 2007, comprised 41 underground diamond drill holes, drilled on 50 metre centres, totaling 8,200 metres.

"The objective of the 2006/07underground drilling program is to bring the Prairie Creek resource into 43-101 compliance and to define at least 10 years of mine life in the Measured and Indicated categories. These objectives have already been reached and surpassed, as confirmed by the new estimate, and the project can now move ahead with further detailed mine planning and development" Mr. Alan Taylor COO and VP Exploration stated.

Highlights

- Total Measured and Indicated Resources 5.8 million tonnes at greater than 20% combined Pb and Zn

- Measured Resources in Vein increase 73% at 25% combined Pb and Zn with 212g/t Ag

- Indicated Resources in Vein increase 105% at 24% combined Pb and Zn with 212g/t Ag

- Inferred Resource in vein 5.5 million tonnes at 25% combined Pb and Zn with 216g/t Ag

- Average increase of 10% in silver grades

- Confirmation of grade and continuity in a 43-101 compliant resource report

Within the Prairie Creek deposit three types of mineralization were recognized; vein, stratabound and stockwork.

Measured and Indicated Resources Increase

Vein mineralization hosts the majority of the presently defined mineral resource. As a direct result of the recent underground tunnel development creating new vein exposures in drifts and crosscuts the Measured Resource within vein material has now increased by 73% from the previous 542,000 tonnes to 938,624 tonnes grading, 11.63% Pb, 13.11% Zn, 211.89 g/t Ag and 0.465 % Cu.

Indicated resources within vein material have increased by 105% to 2,944,862 tonnes grading 11.16% Zn, 12.67% Pb, 212.39 g/t Ag, and 0.472% Cu. The significant increase in the Indicated resources is directly attributable to the recent underground diamond drill program from the newly established decline tunnel development.

In a similar manner, Measured resources within stratabound mineralization have increased to 611,417 tonnes grading 6.68% Pb, 10.85% Zn and 67.55 g/t Ag. This is also directly related to the recent underground drilling locating new stratabound material. Indicated resources within the stratabound mineralization now stand at 663,261 tonnes grading 5.53% Pb, 10.15% Zn, and 61.99 g/t Ag.

The stockwork resource was downgraded since it was determined that there is currently a lack of sufficient data to generate any meaningful geostatistics.

Total Measured and Indicated resource categories at Prairie Creek now stand at 5,840,329 tonnes grading 9.90% Pb, 10.71% Zinc, 161.12 g/t Ag and 0.326% Cu, which would represent a mine life well in excess of ten years at the planned 1,000 to 1,500 tonnes per day production rate.

Inferred Resources open-ended

In addition, there remains a large Inferred resource, which mostly reports to the Vein, of 5,541,576 tonnes grading 11.43% Pb, 13.53% Zn, 214.80 g/t Ag and 0.514% Cu. "Inferred mineral resources" have significant uncertainty as to their existence, as well as to their economic feasibility. The Inferred resources lie within the Main Zone in an area along strike to the north where there are currently only widely spaced drill holes. The vein remains open along strike to the north and a surface mineral showing lies four kilometres along strike from the last drill hole in the vein.

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