21. Mark Donegan
21. Mark Donegan
Chairman and CEO, Precision Castparts

Donegan is a GE vet who has posted stellar results at Precision Castparts, a maker of complex metal parts for jet engines, gas turbines, and other large ­industrial components. The company has been riding high lately, thanks in part to strong demand from aerospace customers like Boeing, which uses its engine parts in the 787 Dreamliner. Revenues rose 12% in fiscal 2011, to $6.2 billion.


By Richard McGill Murphy, contributor @FortuneMagazine - Last updated November 17 2011: 5:58 PM ET
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