U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
Wyoming
 
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Corporate Name Change & Merger Index

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Company Name
(OLD NAME)
Changed or Merged To
(NEW NAME)
Date of
BLM WY
Decision or
Cover Memo
BLM State
Office that
Issued
Decision
Uintah Basin Oil ShaleArjay Oil Company01/01/1976WY
UKP Land IncPresidio Expl Inc05/15/1991WY
UKP Oil IncPresidio Expl Inc05/15/1991WY
Ultra Petro (USA) IncUltra Resources Inc10/22/1998WY
Ultramar O&G LtdWilliams-Cody Inc07/07/1997WY
UMC Petro CorpOcean Energy Inc

    (Amended Decision)
06/12/1998
07/14/1999
02/12/2003
NM
WY
NM
UMC Petro Res CorpUMC Petro Corp08/23/1990WY
Underwood, Rip C.

Estate of Rip C. Underwood, First National Bank of Amarilo, TX and Hugh Russell, co-executors.

06/29/1977

TX

Union Pacific Oil&Gas CoRME Oil & Gas Co04/25/2001WY
Union Pacific Res CoRME Petroleum Company04/25/2001WY
Union Petroleum CorpHome Petroleum Corp05/23/1974WY
Union Texas Exploration CorporationUnion Texas Petroleum Corporation07/05/1991WY
Union Texas Petroleum Corporation

Union Texas International Corporation

04/04/1986

WY

Union Texas Properties Corporation

Union Texas Petroleum Corporation

04/04/1986

WY

Unit Acquisition CompanyPetroCorp Inc08/17/2004MT
United Bank of DenverWells Fargo Bank of San Francisco11/25/2005WY
United Natural Resource CorpMarkland Corporation, A Texas corporation10/08/1985
10/21/1985
11/20/1985
WY
WY
WY
United Services Life Insurance Company

ReliaStar United Services Life Insurance Company

12/29/2004

NM

United States Borax & Chemical CorpUS Borax Inc 

06/28/1996

WY

United States Smelting, Refining and Mining Company

UV Industries, Inc.

10/06/1972

WY

United States Steel LLCUnited States Steel Corporation09/20/2005WY
Universal ResourcesQuestar Expl & Prod Co12/03/1999ES*
Universal Uranium Company

Universal Fuels Company

    Amended Decision-Additional O&G Leases
    Amended Decision-Additional Leases

02/29/1980
11/28/1980
07/09/1982
10/14/1983

CO
WY
WY
WY

Upland Resources, Inc.Granite Operating Company

10/25/2010
11/01/2010

NM
WY

US Min & Royalty CorpHabersham Energy Co04/19/1990WY
US WestQWEST01/22/2001WY
US West New Vector Group IncCellco Partnership dba Verizon Wireless02/24/2004WY
US West New Vector Group IncAirtouch Communications Inc02/24/2004WY
USX CorporationUnited States Steel LLC09/20/2005WY
Utah-Wyoming Telephone CoUtah-Wyoming Telecom08/15/2004WY
Utah-Wyoming TelecomAll-West Communications08/15/2004WY
UV Industries, Inc.

Company Dissolved, 
    Assets acquired by Sharon Steel Corporation

09/16/1982

WY

* Eastern States Office, Springfield VA

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Last updated: 02-13-2014