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BiographyMr. Boyd served as chairman of the board of directors from 1998 to 2006, when he was appointed our lead director. Mr. Boyd served as Senior Vice President... |
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| Date | Designation | Entity | Entity Description | Country |
|---|---|---|---|---|
| 1997 | Arch Coal Inc | -- | -- | |
| 2006 | Halliburton Co | Company In Energy | United States |