SOURCE: Liberty Mines Inc.

August 21, 2007 08:00 ET

Liberty's Redstone Mill Recovers 91.7% Nickel

EDMONTON, AB--(Marketwire - August 21, 2007) - Liberty Mines Inc. ("Liberty or the Corporation") (TSX-V: LBE) is pleased to announce that the recovery of nickel from the flotation circuit at the Redstone Mill has averaged 91.7% since August 8 after a few adjustments were made to the circuit. Samples of tailings, cyclone overflow (which represent well mixed head grades) and concentrate from both the day and night shifts were analyzed by atomic absorption to obtain the nickel ("Ni") content of the slurries. Head grades from the stock piled ore averaged 2.21% Ni and the average concentrate grade was 20.7% Ni.

Historic recoveries from the Redstone ore during 1990-1992 averaged about 87% with a head grade of 2.4% Ni. "Our expectations of achieving a recovery of 90% or better with a concentrate grade around 20% Ni from the Redstone ore have been confirmed," said Liberty's President Gary Nash. "The crushing, grinding and flotation circuits in the mill are working exceptionally well," he added.

However, the Larox hydraulic filter press needs further rehabilitation. New hydraulic hoses, diaphragms and couplings are on route from Larox in Maryland USA to enable the unit to operate at full efficiency. A drum filter press will be used in the interim while the hydraulic unit is being repaired. Filter presses are used as the end point in the circuit to remove excess water from the concentrate obtained from the concentrate thickener.

Liberty received its second payment of nickel in concentrate from China today.

About Liberty Mines Inc.

Liberty Mines Inc. is a mineral exploration and development company with a focus on the development and mining of nickel, cobalt, copper and platinum group metals from its properties in Ontario.


No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein. The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release. This News Release includes certain "forward-looking statements" regarding the operation of the Redstone Mill and other future plans and objectives of Liberty. Actual results may differ materially from those contemplated by these statements depending upon, among other things, any unforeseen difficulties with the operations of the Corporation. 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

Contact Information

  • For further information please contact:
    Dr. Gary Nash, PhD (Physics)
    President & CEO
    Liberty Mines Inc.
    Phone (416) 238-9736
    Fax 780-437-7898
    e-mail: Email Contact