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Alcoa Corrects 4th Quarter Supplemental Information

10 January 2000

Alcoa Corrects 4th Quarter Supplemental Information

    --Jan. 10, 2000--In BW0159, (PA-ALCOA) Alcoa's Earnings Surge 24% Year-to-Year, Exceed $1 Billion for the First Time, four figures were incorrect in the table titled "ALCOA 4th QUARTER SUPPLEMENTAL INFORMATION."
    Under Consolidated Revenues, in the Primary metals line, the figure for 4Q99 should read xxx 628.7 (sted 634.9), and the figure for 1999 should read xxx 2,240.9 (sted 2,247.1).
    Under Consolidated Revenues, in the Engineered products line, the figure for 4Q99 should read xxx 929.6 (sted 921.7), and the figure for 1999 should read xxx 3,728.5 (sted 3,720.4).
    The corrected table follows:

ALCOA 4th QUARTER SUPPLEMENTAL INFORMATION


Consolidated
   Revenues        4Q98      1Q99     2Q99    3Q99      4Q99      1999
  Alumina and
     chemicals    452.7     420.3    455.8   473.9     492.0   1,842.0
  Primary metals  629.8     533.7    518.6   559.9     628.7   2,240.9
  Flat-rolled
     products   1,291.8   1,269.6  1,257.6 1,273.0   1,312.3   5,112.5
  Engineered
     products     978.8     942.3    939.3   917.1     929.6   3,728.5
  Other           839.4     812.8    861.1   828.4     890.5   3,392.8
Total           4,192.5   3,978.7  4,032.4 4,052.3   4,253.1  16,316.5

Consolidated Shipments (KMT's)
  Alumina and
     chemicals    1,783     1,664    1,836   1,814     1,740     7,054

  Primary metals    441       370      354     335       383     1,442
  Flat-rolled
     products       479       487      496     496       503     1,982
  Engineered
      products      240       258      249     249       233       989
  Other              14        17       18      20        10        65
  Total Aluminum  1,174     1,132    1,117   1,100     1,129     4,478

Average realized
   price - Primary 0.64      0.63     0.64    0.71      0.72     0.673