Magma Copper
1990 rank: 439
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FORTUNE 500 appearances:
Revenues 653.1 7.6 439 439
Profits 58.5 3.8 272 293
Assets 954.1 ó 314 304
Stockholders' Equity 449.3 ó 266 285
Market Value 137.5 ó 398 ó
1989 ($) 1.82
1988 ($) 1.50
% change 21.3
1989 -26.8 N.A.
Since 1955, when the first FORTUNE 500 was created, more than 1,800 companies have appeared on the list. Many of these companies have changed names over this period, owing to mergers, acquisitions, and bankruptcies. Other companies have gone private, or simply changed their names.

Companies are listed by the name with which they were associated in 2005, or at the time of their most recent list appearance before that. FORTUNE 500 companies that have been acquired by other FORTUNE 500 companies are listed under the name of the acquiring company. Rankings have been revised to reflect corrections in data.

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