TORONTO, May 17 /CNW/ - Chieftain Metals Inc. ("Chieftain" or the "Company") (TSX: CFB) has initiated a metallurgical testing program to determine if opportunities exist to improve recoveries from previous 2007 feasibility levels.

Since the previous work relating to the previous 2007 feasibility took place, several significant advances have taken place in controlling pulp and surface chemistry in sequential flotation of poly-metallic ores and it is Chieftain's plan to investigate and test these.

Detailed quantitative mineralogy has been conducted on a single sample from the main ore zone which was available from previous drilling.

This sample has exhibited encouraging indications that overall liberation of the various ore bearing minerals is favorable to obtaining high levels of selectivity between Gold, Copper, Lead and Zinc minerals.

Initial tests indicated that important percentages of coarse gold may be recovered into a concentrate that can be treated for early revenue receipts. Silver recovery was also considered to be more favorable than previously indicated.

Tests on this section of old core from the initial extraction area demonstrated that the application of, closer grinding control and recently developed and successfully applied flotation reagents, may significantly improve the selectivity of the milling circuit.

Tests on fresh metallurgical samples will be carried out as soon as the samples are available to verify the preliminary findings and define the potential improvements in the quality and quantity of the concentrates that will be produced.

In particular the most significant developments have been in creating a more selective regime for the separation of copper and lead minerals which had been the most difficult step in previous work.

The effective separation of gold values into a combination of a gravity concentrate and copper concentrates is key to maximizing payable values, and it would appear that there is no fundamental mineralogical limitation.

Chieftain intends to test the potential recovery improvements and has obtained new samples typical of the proposed production from the Tulsequah Chief mine in order to confirm the potential improvement.

About Chieftain Metals Inc.

Chieftain Metals Inc.'s principal business is the acquisition, exploration and development of mineral properties. Since incorporation, the Company's business has focused entirely on the acquisition, and thereafter the development, of the Tulsequah Polymetallic Project, in northwestern British Columbia, Canada. The Tulsequah Project consists of 38 mineral claims and Crown-grants covering approximately 14,220 hectares and covers two previously producing mines. For more information on the Tulsequah Project, please refer to the Company's NI 43-101 compliant technical reports, "Tulsequah Chief Deposit, Tulsequah Chief Property, Northern British Columbia" and "Big Bull Project, Tulsequah Chief Property, Technical Report, Northern British Columbia", each dated as of November 8, 2010 and available under the Company's profile on SEDAR font-weight="bold" href="">(

Forward-Looking Information:

This press release includes certain "forward-looking statements" within the meaning of the Ontario Securities Act or other laws or regulations. All statements, other than statements of historical fact, included herein, including without limitation, statements regarding potential mineralization, mineral resources or reserves, exploration results and future plans and objectives of Chieftain Metals Inc. are forward-looking statements that involve risks and uncertainties. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements.


SOURCE Chieftain Metals Inc.

For further information:

Jamie Frawley
Director of Corporate Communications
Telephone: (416) 644-6000 ext. 360
  Victor Wyprysky
President and CEO
Telephone: (416) 644-6000 ext. 650


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