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    African Minerals Ltd.

    ANR, Inc.

    ANR, Inc.

    ANR affiliates produce both steam and metallurgical coal, for both power generatio...

    ANR affiliates produce both steam and metallurg...

    American Metal & Technology, Inc.

    American Metal & Technology, Inc.

    American Metal & Technology, Inc., through its subsidiary, American Metal Technolo...

    American Metal & Technology, Inc., through its ...

    PDC Energy, Inc.

    PDC Energy, Inc.

    Founded in 1969, PDC Energy is an independent exploration and production company f...

    Founded in 1969, PDC Energy is an independent e...

    Penn Virginia Corporation

    Penn Virginia Corporation

    Penn Virginia Corporation is an independent oil and gas company engaged in the exp...

    Penn Virginia Corporation is an independent oil...

    Alpha Energy, Inc.

    Alpha Energy, Inc.

    Alpha Energy, Inc. operates as an oil and gas exploration and development company,...

    Alpha Energy, Inc. operates as an oil and gas e...