Cambior Inc.

Cambior Inc.

April 19, 2005 18:16 ET

Cambior to Dispose of Carlota Project




APRIL 19, 2005 - 18:16 ET

Cambior to Dispose of Carlota Project

LONGUEUIL, QUEBEC--(CCNMatthews - April 19, 2005) - Cambior Inc.
(AMEX:CBJ)(TSX:CBJ) All amounts are expressed in US dollars.

Cambior announces that its Board of Directors has approved the
divestiture of the Carlota Project. Accordingly, management will be
seeking proposals from interested parties for the sale of the Carlota

It is estimated that the Carlota copper project, located in the
Miami-Globe area of Arizona, contains probable reserves of 91.1 million
tonnes at a grade of 0.39% copper representing 355,000 tonnes of
contained copper. The ore is amenable to processing through leaching of
run-of-mine ore (ROM) on impervious pads and a SX-EW (solvent extraction
and electrowinning) plant. Cambior, with the assistance of external
consultants, has completed a feasibility study which supports the
following operating parameters:

Average annual copper cathode production 68 million lbs
Average recovery rate 84%
Estimated mine operating costs (per lb of copper) $0.54
Estimated mine life 10 years

Capital and pre-production expenditures for the project are forecasted
at $90-100 million depending on copper prices during pre-production and
the construction period is estimated at 18 months. The project received
all permits required for construction and mining. The deposit is subject
to certain royalties payable to former property holders for a cash cost
of approximately $0.04 per lb Cu recovered.

Louis P. Gignac, Cambior's President and CEO, stated: "The sale of the
Carlota copper project will allow us to realize value for our
shareholders and the proceeds from the sale of this non-core asset will
be redeployed to fund the development of our gold projects and to earn
participation in new gold properties, as we strive to reach our goal of
800,000 ounces annual gold production in the medium term".

Cambior Inc. is an international gold producer with operations,
development projects and exploration activities throughout the Americas.
Cambior's shares trade on the Toronto (TSX) and American (AMEX) stock
exchanges under the symbol "CBJ". Cambior's warrants "CBJ.WT.C" and
"CBJ.WT.D" trade on the TSX.

Caution Concerning Forward-Looking Statements

This press release contains certain "forward-looking statements",
including, but not limited to, the statements regarding the Company's
strategic plans, the disposal of the Carlota copper project, its
anticipated benefits and the use of proceeds resulting thereof,
construction and production targets and timetables, evolution of mineral
reserves, and mine operating costs. Forward-looking statements express,
as at the date of this press release, the Company's plans, estimates,
forecasts, projections, expectations or beliefs as to future events and
results. Forward-looking statements involve a number of risks and
uncertainties, and there can be no assurance that such statements will
prove to be accurate. Therefore, actual results and future events could
differ materially from those anticipated in such statements. Risks and
uncertainties that could cause results or future events to differ
materially from current expectations expressed or implied by the
forward-looking statements include, but are not limited to, factors
associated with fluctuations in the market price of precious metals,
mining industry risks, risks associated with foreign operations,
environmental risks and hazards, uncertainty as to calculation of
mineral reserves and other risks referred to in Cambior's 2004 Annual
Information Form filed with the Securities Commissions of all provinces
in Canada, and with the United States Securities and Exchange Commission
(under Form 40-F), as well as the Toronto Stock Exchange and the
American Stock Exchange.


Contact Information

    Robert LaValliere
    Manager - Investor Relations
    (450) 677-2699 or 1-866-554-0554
    (450) 677-3382 (FAX)