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Hewson James Adam

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Heying Theodore L.

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Hickman Grady A.

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Higginbotham James R.

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Hilbig Nicholas

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Hinkel Robert M.

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Hollier Glynn

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Honjas William

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Hooper David W.

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Hopley Robert J.

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Hoppe Eugene A.

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Hughes W. James

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Humphreys Gavin

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Hunting MCS, Inc.

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Hurtz Georg

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Hutch Harry

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Hutton Richard

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Huycke John

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Hydro Drilling International S.p.A.

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I.D.A. Corporation

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