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#12490C & L OIL COMPANY
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#12485C U BAY
#6661C.M.&W. DRILLING CO INC.
#100304C.W.I. OIL & GAS INC
#12600CABEEN EXPL
#12780CABOT OIL & GAS CORPORATION
#12825CABOT OIL & GAS PRODUCTION
#12826CABOT PETRO CORP.
#12827CABRE EXPLORATION, INC.
#12830CACHE EXPLORATION INC
#12835CACTUS PETROLEUM COMPANY
#100517CADDO CORPORATION
#12844CAERUS PICEANCE LLC
#10456CAERUS WASHCO LLC
#86610CALCO DBA CALLISTER CO
#12930CALDWELL & COVINGTON
#12905CALIFORNIA COMPANY * THE
#12970CALIFORNIA ENERGY COMPANY INC
#12947CALIFORNIA OIL COMPANY
#12980CALIFORNIA OIL GROUP, LTD
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#12958CALLON PETROLEUM CO
#12960CALPINE NATURAL GAS LP
#12965CALRADO PETROLEUM CORP
#12909CALVERT DRILLING, INC
#12968CALVERT EXPLORATION COMPANY
#100710CALVERT PETROLEUM COMPANY
#13108CALVERT-SEELIGSON
#13100CALVIN PETROLEUM CORP
#13155CALVIN* RODNEY P.
#13157CAMERLAND CARDINAL CORP
#13190CAMERON OIL COMPANY
#13188CAMPBELL COMPANY
#13299CAMPBELL-BICKLING
#13250CAMPBELL*G.S.
#13288CANAAN OIL & GAS INC
#13320CANADA SOUTHERN OILS INC.
#13332CANFIELD DRILLING COMPANY
#100382CANNON RESOURCES INC
#13340CANNON* DALE
#13450CANNON* ROBERT
#13465CANON RELIANCE FUEL CO* THE
#100730CANUS PETROLEUM INC
#13868CANYON OIL COMPANY
#13888CAPITAL MANAGEMENT RESOURCES LLC
#10136CAPITOL ENERGY CORP
#13950CARAVAN WATER SERVICE INC
#13600CARBON ENERGY CORPORATION (USA)
#100233CARBON STORAGE SOLUTIONS LLC
#10786CARDINAL ENERGY CO
#14170CARDINAL PETROLEUM CO
#14175CAREY DRILLING CO INC* THE E. K.
#100442CAREY RESOURCES INC
#14180CARIBOU ENERGY INC
#14225CARMACK & CRAWFORD
#14366CARMACK DRILLING CO
#14228CARMACK DRILLING COMPANY
#14300CARMACK RESOURCES INC
#10337CARMEND OIL CO
#14320CARPENTER-TRANT DRILLING
#14388CARR EXPLORATION CORP
#14395CARR,CARROLL,HALLOCK ASSOC INC
#14390CARR*WILLIAM F.
#14399CARRIZO NIOBRARA LLC
#10439CARRIZO OIL & GAS INC
#10338CARTER & CARTER
#14450CARTER OIL CO
#14460CARTER* JOHNNIE
#14430CARVILL* GORDON S
#100320CASCADE OIL
#14495CASCADE OIL AND GAS, INC
#14500CASCADE PETROLEUM LLC
#10414CASEY KAY COMPANY
#14540CASEY* D C
#100741CASSIDY ENERGY
#14545CATAMOUNT ENERGY PARTNERS LLC
#10464CATAMOUNT EXPL INC
#14675CAULKINS OIL COMPANY
#14715CAVANAUGH & CAVANAUGH INC
#14720CAYMAN CORPORATION
#14721CAZA DRILLING COMPANY
#14724CAZA DRILLING INC
#14723CAZORT JR* LEE
#200023CCRP OPERATING INC
#10665CDM OIL & GAS
#14740CDX ROCKIES LLC
#14700CEDAR RIDGE LLC
#14775CEH OPERATING LLC
#10795CELERON OIL AND GAS COMPANY
#14796CELSIUS ENERGY COMPANY
#14790CENEX INC
#14825CENTENNIAL OIL CO
#14850CENTENNIAL PETROLEUM INC
#14851CENTRAL OPERATING INC
#14855CENTRAL RESOURCES, INC
#14900CENTURY OIL & GAS CORP
#14919CER CORPORATION
#14870CFG ENERGY, INC
#12460CGT INC
#12470CH2M HILL CENTRAL INC
#12466CHACO ENERGY COMPANY
#10017CHAIN OIL
#13000CHAMBERS & KENNEDY-FULTON
#14988CHAMPLIN OIL & REFINING CO
#15545CHAMPLIN PETROLEUM COMPANY
#15550CHANCELLOR & RIDGEWAY
#15600CHANCELLOR EXPLORATION CO
#15601CHANDLER - SIMPSON INC
#15851CHANDLER & ASSOCIATES LLC
#15850CHANDLER CREEK COMPANIES
#15853CHANDLER DJ BASIN LLC
#10040CHANDLER-MUSGROVE, INC
#15854CHAPARRAL RESOURCES INC
#16250CHARLES P DUNNING LLC
#200077CHARTER EXPLORATION & PROD
#16252CHARTER PRODUCTION COMPANY
#16254CHATHAM OIL CO
#16288CHATHAM OIL COMPANY
#16388CHEMCO INC
#16520CHEROKEE & PITTSBURG COAL AND MINING COMPANY* THE
#16600CHEROKEE AIR DRILLING, INC.
#16610CHEROKEE OIL PRODUCTION INC
#16620CHESAPEAKE OPERATING LLC
#16660CHEVRON MIDCONTINENT LP
#16695CHEVRON USA INC
#16700CHEYENNE DRILLING INC
#16710CHEYENNE OIL VENTURES
#100327CHEYENNE PROPERTIES INC
#16725CHICAGO BURLINGTON QUINCY
#100826CHICAGO CORP
#16713CHIEF DRLG CO
#16715CHIEFTAIN OIL & GAS COMPANY
#16716CHILDERS DRILLING
#16718CHILDS OIL CO INC
#16720CHINOOK ENERGY CORPORATION
#16723CHITTIM & ALLARDYCE
#100383CHITTIM* CHAS B
#100498CHOLLA PETROLEUM INC
#10227CHOLLA PRODUCTION LLC
#16830CHORNEY OIL CO
#16850CHOTZINOFF OIL PROPERTIES
#16853CHRISMAN OIL CO
#16860CHRISTIE JR* C B
#16870CHRISTMANN ENERGY CORP
#100384CHURCHILL ENERGY INC
#16910CIG EXPLORATION INC NDBA EP ENERGY E&P COMPANY LP
#17060CIG RESOURCES COMPANY
#17062CIMARRON OIL & GAS CO INC
#17070CIMARRON OIL CO INC
#17080CIMARRON WESTERN DRILLING CO
#17090CINNAMON CREEK OIL & GAS INC
#17210CISAR* WALTER J
#17150CITATION OIL & GAS CORP
#17180CITIES SERVICE OIL & GAS CORP
#17250CITIZENS OIL COMPANY
#17285CITY & COUNTY OF DENVER
#17320CITY OF LONGMONT
#17325CIVITAS NORTH LLC
#10661CLARK CANADIAN EXPLORATION COMPANY
#100653CLARK OIL & REFINING CORPORATION
#17557CLARK* CURTIS
#17510CLARK* JOHN JR
#17545CLARK*E.B. SR.
#17538CLASSIC PETROLEUM CORP
#17555CLAYCOMB & GUIDA OIL PROPERTY
#17558CLAYCOMB-WRITER
#17559CLAYTON CORPORATION
#41640CLAYTON INVESTMENTS INC
#17575CLAYTON OIL CO
#17580CLC OPERATIONS INC
#17590CLEARWATER DISPOSAL LLC
#10733CLEARY PETR INC
#17600CLEARY PETROLEUM CORPORATION
#10121CLEVEROCK ENERGY CORPORATION
#100742CLIFFORD RESOURCES INC
#17650CLIFTON & WESTMORELAND
#17750CLINE OIL CO* JAMES M
#100655CLINTON OIL COMPANY
#17751CLIPPER INTENATIONAL OIL CO
#17755CLOUGH* W F
#17760CLX OIL & GAS LLC
#18040CM PRODUCTION LLC
#10352CMO RESOURCES INC
#17774CNG PRODUCING CO
#17777COASTAL OIL & GAS CORPORATION
#17780COASTAL PLAINS ENERGY INC
#10141COBB-STRINGER
#17888COCKBURN* BARNEY
#200044COCKRELL OIL CORP
#18005CODA ENERGY INC
#16200CODY NORDELL EXPL INC
#18010COLE* JACK A
#18020COLEMAN OIL & GAS INC
#18160COLES JR* OTIS C
#18180COLGROVE JOHNSTON
#100518COLLISTER* WILLIAM B
#18250COLO-MO PETROLEUM CORP
#18575COLORADO CENTURY PRODUCTION CO
#18599COLORADO ENERGY CORPORATION
#100256COLORADO ENERGY MINERALS INC
#18615COLORADO ENERGY RESOURCES
#18595COLORADO EXPL AND DRLG
#18597COLORADO FUEL AND IRON CORPORATION* THE
#100743COLORADO HYDROCARBONS
#100965COLORADO INTERSTATE GAS COMPANY LLC
#18600COLORADO NORTHWESTERN COMMUNITY COLLEGE
#100916COLORADO OIL & GAS COMPANY
#18657COLORADO OIL & GAS CORPORATION
#18655COLORADO OIL & REFINING
#18578COLORADO OIL AND GAS CORPORATION - OLD OPERATOR
#100544COLORADO OIL CO INC
#18610COLORADO OIL GROUP, LTD
#18588COLORADO OIL VENTURES INC
#100656COLORADO PACIFIC PETR CORP
#18643COLORADO SOUTHERN GAS INC
#18625COLORADO SOUTHERN PETROLEUM CORP
#18265COLORADO WESTERN EXPL
#18670COLORADO WYOMING DRILLING CO
#18710COLTEX PETROLEUM INC
#18712COLTON & COLTON
#18720COLTON CO* H & C
#18680COLTON CO* THE
#18790COLTON LIMITED LIABILITY CO
#18795COLUMBINE EXPLORATION CORP
#18818COLUMBINE PRODUCTION CO
#18830COLZONA OIL COMPANY
#18888COMANCHE OIL CO
#18900COMPASS EXPL INC
#19000CON PETRO INC
#19175CONCORD OIL COMPANY INC
#19130CONDOR ENERGY TECHNOLOGY LLC
#10394CONFLUENCE DJ LLC
#10518CONLEY* COX
#20681CONOCO INC
#19162CONOCO PHILLIPS COMPANY
#19160CONQUEST OIL COMPANY
#19170CONROY, INC.
#100170CONSOLIDATED FUEL GAS SUPPLY
#19640CONSOLIDATED OIL & GAS INC
#19650CONSOLIDATED RESOURCES INC
#19690CONSOLIDATED SMELT
#200088CONSOLIDATED WESTERN OIL CO
#19697CONTINENTAL
#19695CONTINENTAL ENERGY CORPORATION
#19751CONTINENTAL OIL COMPANY
#100207CONTINENTAL PETR INC
#19757CONTINENTAL PETROLEUM INC
#19770CONTINENTAL RESOURCES
#100603CONTINENTAL RESOURCES INC
#10347COOK* CHARLES E
#20102COORS ENERGY COMPANY
#20170COPELAN* HERSCHEL L.
#20188COPPER LAND RESOURCES LLC
#10808COQUINA OIL CORPORATION
#20260CORAL PRODUCTION CORP
#20275CORMAN EXPLORATION, INC
#20266CORONADO OIL COMPANY
#20280CORTEZ OIL CO
#20285CORTEZ PETROLEUM
#20288COSDEN PETROLEUM CORPORATION
#100315COSEKA RESOURCES (USA) LTD
#20450COSTILLA ENERGY INC
#20460COTTON PETROLEUM CORP
#20500COUGAR PETR INC
#20600COUNT DUNAWAY
#20647COVALENCE OPERATING COMPANY LLC
#10868COW GULCH OIL
#100592COWAN OIL CO
#20630COWEN* MICHAEL T
#20635COWRY ENTERPRISES LTD
#20670COX JR* HOWARD W
#200024COX OIL & GAS INC
#20684COX OIL & GAS INC
#20685COX* CONLEY
#20682CPX PICEANCE HOLDINGS LLC
#10639CRA INC
#21145CRABTREE OIL & GAS CO
#100003CRAIG A COULTER
#100961CRAIG RESOURCES INC
#20750CRAISE* F A
#100227CRAMER CO LTD* THE
#20900CRAMER* J.L.
#20988CRANDALL DRLG & TRENCHING INC
#21110CRANE DRILLING COMPANY
#21118CRAWLEY PETROLEUM CORPORATION
#10599CRAZY 8 ENERGY LLC
#10496CREBBS* CHERSTER M
#100732CREDIT MOBILIER OF AMERICA
#21160CREE DRILLILNG COMPANY INC
#100744CREEK CATTLE CO
#21183CRESCENT POINT ENERGY U.S. CORP
#10520CRESLENN OIL CO
#21200CREST OIL & GAS CO INC
#100483CRESTONE PEAK RESOURCES OPERATING LLC
#10633CRG CORP
#21320CRIMSON EXPLORATION OPERATING INC
#10170CRISTMANN ENERGY CORP
#21530CROSSLAND* DAVID A & CHERYL J
#10215CROWDER* JOE
#21640CROWHEART ENERGY LLC
#10776CROWLEY* GLEN
#21650CROWN CENTRAL PETROLEUM CORP
#21700CROWN OIL CORP
#21675CROWN PETROLEUM COMPANY LLC
#21680CRUMLEY* JACK
#21750CRUSADER CORP
#21888CRV TRICKETT
#100708CRYSTAL EXPLORATION & PRODUCTION COMPANY
#22103CRYSTAL OIL COMPANY
#100208CSG EXPLORATION CO
#12480CSX OIL & GAS CORPORATION
#87200CUB CREEK ENERGY LLC
#10542CULLUM EXPLORATION INC
#22090CUMMINS* DEAN L.
#22118CURTON CAPITAL CORP
#10134CUSHMAN & PILCHER
#22120CUTLASS OIL CORP
#22130CUTLER BROTHERS
#22170CWC PETRO LLC
#10730CYANOSTAR ENERGY, INC
#12608CYPRESS PRODUCTION INC
#10284CYPRUS WESTERN COAL CO NDBA TWENTYMILE COAL CO
#12615CZAR RESOURCES
#12625