Table 4.--Aluminum supply-demand relationships
                                                                (Thousand metric tons)
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                                                1970    1971    1972    1973    1974    1975    1976    1977    1978    1979
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                                                                     COMPONENTS AND DISTRIBUTION OF U.S. SUPPLY
                                              ------------------------------------------------------------------------------
Primary metal production --------------------- 3,607   3,561   3,739   4,109   4,448   3,519   3,856   4,118   4,358   4,557
Secondary production (old scrap) -------------   179     196     227     240     276     305     371     482     522     557
Shipments of Government stockpile excesses ---    22     ---       5     662     464       2       8     ---     ---     ---
Imports --------------------------------------   425     626     720     557     571     499     679     758     980     762
Industry stocks, Jan. 1 ---------------------- 1,716   1,989   2,280   2,205   1,980   2,339   2,721   2,585   2,588   2,492
                                              ------------------------------------------------------------------------------
     Total U.S. supply ----------------------- 5,948   6,372   6,972   7,774   7,738   6,664   7,636   7,943   8,448   8,368

Industry stocks, Dec. 31 --------------------- 1,989   2,280   2,205   1,980   2,339   2,721   2,585   2,588   2,492   2,325
Exports --------------------------------------   555     266     298     509     475     399     439     373     472     701
Industrial demand ---------------------------- 3,404   3,827   4,468   5,284   4,924   3,544   4,611   4,982   5,484   5,342
                                              ------------------------------------------------------------------------------
                                                                              U.S. DEMAND PATTERN
                                              ------------------------------------------------------------------------------
Construction ---------------------------------   855   1,080   1,317   1,416   1,221     875   1,120   1,191   1,284   1,202
Transportation -------------------------------   587     695     918   1,099     951     663     969   1,142   1,239   1,212
Electrical -----------------------------------   517     552     633     724     719     472     502     533     592     620
Containers and packaging ---------------------   558     588     486     808     886     783   1,029   1,106   1,261   1,271
Consumer durables ----------------------------   355     378     464     523     453     294     406     418     461     406
Machinery and equipment ----------------------   230     250     309     370     404     251     355     358     395     374
Other ----------------------------------------   301     282     340     344     290     206     230     234     252     257
                                              ------------------------------------------------------------------------------
     Total U.S. demand ----------------------- 3,404   3,827   4,468   5,284   4,924   3,544   4,611   4,982   5,484   5,342
Total U.S. primary demand -------------------- 3,225   3,631   4,241   5,044   4,648   3,239   4,240   4,501   4,962   4,785
                                              ------------------------------------------------------------------------------
                                                1980    1981    1982    1983    1984    1985    1986    1987    1988    1989
                                              ------------------------------------------------------------------------------
                                                                   COMPONENTS AND DISTRIBUTION OF U.S. SUPPLY
                                              ------------------------------------------------------------------------------
Primary metal production --------------------- 4,654   4,489   3,274   3,353   4,099   3,500   3,037   3,343   3,944   4,030
Secondary production (old scrap) -------------   617     758     782     820     825     850     784     852   1,045   1,011
Shipments of Government stockpile excesses ---   ---     ---     ---     ---     ---     ---     ---     ---     ---     ---
Imports --------------------------------------   647     848     878   1,091   1,477   1,420   1,967   1,850   1,620   1,470
Industry stocks, Jan. 1 ---------------------- 2,325   2,302   2,995   2,802   2,263   2,690   2,343   2,235   1,894   1,883
                                              ------------------------------------------------------------------------------
     Total U.S. supply ----------------------- 8,243   8,397   7,929   8,066   8,664   8,460   8,131   8,280   8,503   8,394

Industry stocks, Dec. 31---------------------- 2,302   2,995   2,802   2,263   2,690   2,343   2,235   1,894   1,883   1,822
Exports--------------------------------------- 1,346     787     748     776     734     908     753     917   1,247   1,615
Industrial demand ---------------------------- 4,594   4,615   4,379   5,027   5,240   5,209   5,143   5,469   5,373   4,957
                                              ------------------------------------------------------------------------------
                                                                          U.S.DEMAND PATTERN
                                              ------------------------------------------------------------------------------
Construction --------------------------------- 1,011     974     936   1,118   1,086   1,118   1,126   1,157   1,032     949
Transportation -------------------------------   868     826     715     926   1,117   1,102   1,080   1,204   1,204   1,062
Electrical -----------------------------------   533     512     465     514     567     517     494     498     527     486
Containers and packaging --------------------- 1,286   1,357   1,458   1,519   1,535   1,516   1,512   1,647   1,596   1,548
Consumer durables ----------------------------   340     379     317     414     421     388     427     462     463     399
Machinery and equipment ----------------------   322     323     269     313     314     305     303     322     338     320
Other ----------------------------------------   234     244     219     223     200     263     201     179     213     193
                                              ------------------------------------------------------------------------------
     Total U.S. demand ----------------------- 4,594   4,615   4,379   5,027   5,240   5,209   5,143   5,469   5,373   4,957
Total U.S. primary demand -------------------- 3,977   3,857   3,597   4,207   4,415   4,359   4,359   4,617   4,328   3,946

                                                 Table 4.--Aluminum supply-demand relationships--Continued
                                                                (Thousand metric tons)
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                                                1990
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                                                                    COMPONENTS AND DISTRIBUTION OF U.S. SUPPLY
                                              ------------------------------------------------------------------------------
Primary metal production --------------------- 4,048
Secondary production (old scrap) ------------- 1,359
Shipments of Government stockpile excesses ---    --
Imports -------------------------------------- 1,514
Industry stocks, Jan. 1 ---------------------- 1,822
                                              ------
     Total U.S. supply ----------------------- 8,743

Industry stocks, Dec. 31---------------------- 1,820
Exports--------------------------------------- 1,659
Industrial demand ---------------------------- 5,264
                                              ------------------------------------------------------------------------------
                                                                          U.S. DEMAND PATTERN
                                              ------------------------------------------------------------------------------
Construction ---------------------------------   968
Transportation ------------------------------- 1,112
Electrical -----------------------------------   476
Containers and packaging --------------------- 1,729
Consumer durables ----------------------------   408
Machinery and equipment ----------------------   362
Other ----------------------------------------   209
                                              ------
     Total U.S. demand ----------------------- 5,264
Total U.S. primary demand -------------------- 3,905
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