Cambior Announces its Production Results for the Third Quarter of 1999.

MONTREAL--(BUSINESS WIRE)--Oct. 18, 1999--

(ME:CBJ.) (TSE:CBJ.) (AMEX:CBJ)

All amounts in US dollars

During the third quarter of 1999, Cambior produced 150,200 ounces of gold at an estimated cost of $217 per ounce compared to 156,900 ounces at $222 per ounce in the third quarter of 1998. The Company also produced 18,600 tonnes of zinc, 1,600 tonnes of copper and 287 tonnes of niobium during the third quarter of 1999 as compared to 16,900 tonnes of zinc, 1,400 tonnes of copper and 283 tonnes of niobium in the third quarter of 1998.

For the first nine months of 1999, Cambior produced 463,000 ounces of gold, compared to 468,200 ounces for the corresponding period of 1998. Total zinc production during the first nine months of 1999 was 51,100 tonnes and total copper production was 5,600 tonnes. Cambior's share of production from the Niobec mine was 868 tonnes of niobium.

Cambior Inc. is an international diversified gold producer with operations, development projects and exploration activities throughout the Americas. Cambior is the first gold mining company to receive ISO 14001 certification of its environmental management system. Cambior's shares trade on the Toronto, Montreal and American (AMEX) stock exchanges under the symbol "CBJ".

This press release contains certain "forward-looking statements", as defined in the United States Private Securities Litigation Reform Act of 1995, that involve a number of 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.

Such risks and uncertainties are disclosed under the heading "Risk Factors" in Cambior's Annual Information Form (AIF) filed with the Ontario Securities Commission, the Quebec Securities Commission, the United States Securities and Exchange Commission (Form 40-F) and other regulatory authorities.

CAMBIOR PRODUCTION
GOLD (ounces)             Third Quarter          Nine month period
                              ended                     ended
                           September 30              September 30
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                         1999         1998        1999         1998
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Omai                   73,550       75,058     226,109      238,421
Doyon Division(1)      57,499       65,113     179,939      178,140
Sleeping Giant (50%)    8,789        9,579      26,957       24,909
Bouchard-Hebert/
 Langlois(2)           10,375        7,178      30,014       26,764
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Total                 150,213      156,928     463,019      468,234
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Direct Mining Cost
 ($/oz) (3)               217          222         219          236

BASE  METALS

Zinc (tonnes in
 concentrates)         18,606       16,919      51,142       50,629
Copper (tonnes
 in concentrates)       1,590        1,421       5,619        5,323

Niobec (50%)
 Nb (tonnes)              287          283         868          826


(1) Includes the Doyon and Mouska mines.
(2) Gold and silver production at Bouchard-Hebert and Langlois are
    reported in gold equivalent.
(3) Direct mining cost for the third quarter and the first nine months
    of 1999 are presented as preliminary estimates. Final costs and
    financial results will be available at a later date.