PRODUCERS

       
4-H OPERATING CORPORATION 518 17TH ST  STE 640 DENVER CO 80202 (303)534-3232
ACEITE ENERGY CORP 11150 HURON ST  STE 210 NORTHGLENN CO 80234 (303)861-1748
ADVANTAGE RESOURCES INC 1775 SHERMAN ST  STE 1700 DENVER CO 80203 (303) 831-1912
AEON ENERGY CORP 7551 W ALAMEDA AVE  STE 402 LAKEWOOD CO 80226 (303)922-0590
ALAMOSA DRILLING INC P O BOX 644 6687 MALOUFF RD ALAMOSA CO 81101 (719) 589-3957
ALAN HOWARD KARCHMER LIVING TRUST 2851 S VALLEY VIEW  #1199 LAS VEGAS NV 89102 (702) 221-9273
AMERICAN PETROLEUM ENERGY CO 5944 LUTHER LANE SUITE 900 DALLAS TX 75225 (214) 691-3676
ANADARKO E&P COMPANY LP P O BOX 1330 HOUSTON TX 77251 (832)636-3130
ANDRIKOPOULOS RESOURCES* A G P O BOX 788 CHEYENNE WY 82003-0788 (307) 634-4441
ANTELOPE ENERGY COMPANY LLC P O BOX 577 KIMBALL NE 69145 (308)235-4661
ANTERO RESOURCES CORPORATION 1625 17TH ST  STE 300 DENVER CO 80202 (303)357-7310
APACHE CORPORATION 210 N AUBURN AVE FARMINGTON NM 87401-8412 (505)325-0318
ARGALI EXPLORATION COMPANY 138 PINYON CIR RANGELY CO 81648 (970) 675-8257
ARGONEX COMPANY LLC 2275 QUAIL DR LAKEWOOD CO 80215 (303)237-1424
ARIES OPERATING LLC 1221 MCKINNEY  STE 3100 HOUSTON TX 77010 (713)759-1981
ARK TRUST 8163 E 131 RD WETUMKA OK 74883-6227 (405)379-2600
ARMOR PETROLEUM INC P O BOX 4625 WICHITA FALLS TX 76308 (940)692-5001
ASPEN OPERATING LLC 2040 W HAMILTON PL SHERIDAN CO 80110 (303)761-4770
AUSMUS & CLARK OIL 34809 ROAD 17 HOLLY CO 81047 (719)336-7278
AVALON OIL COMPANY 10 TOWN PLAZA  STE 315 DURANGO CO 81301 (970)259-8954
AVALON OIL COMPANY 10 TOWN PLAZA  STE 315 DURANGO CO 81301 (970)259-8954
B P ENERGY INC 4530 S VERBENA  STE 381 DENVER CO 80237 (303)843-0973
BABCOCK & BROWN ENERGY INC 1512 LARIMER ST STE 550 DENVER CO 80202 (303)460-1132
BANEY WELL SERVICE INC 1629 YORK STREET #202 DENVER CO 80206 (303)996-6761
BARNES PETROLEUM CORPORATION 4356 RICKOVER DR DALLAS TX 75244 (972)385-7468
BARRETT CORPORATION* BILL 1099 18TH ST STE 2300 DENVER CO 80202 (303)293-9100
BARRETT RESOURCES CORP 1515 ARAPAHOE ST  'TOWER 3 SUITE 1000 DENVER CO 80202 (303) 572-3900
BASIC EARTH SCIENCE SYSTEMS IN 8547 E ARAPAHOE RD J-464 GREENWOOD CO 80112 (303) 294-9525
BATES* JAMES EDWARD P O BOX 796 BRIGHTON CO 80601 (303)521-3959
BAYLESS PRODUCER LLC* ROBERT L 621 17TH ST STE 2300 DENVER CO 80293 (303)296-9900
BEARTOOTH OIL & GAS COMPANY P O BOX 398 FRUITA CO 81521-0398 (970)858-4158
BECCA OIL LLC P O BOX 1347 CUSHING OK 74023 (918)225-2334
BEEMAN* ROBT & LEO P O BOX 788 MOAB UT 84532 (970) 259-1195
BEREN CORPORATION P O BOX 20380 WICHITA KS 67208 (316)265-3311
BERENERGY CORP 1700 BROAWAY  STE 660 DENVER CO 80290 (303)295-2323
BEREXCO INC P O BOX 20380 WICHITA KS 67208 (316)265-3311
BERRY ENERGY INC*WALTER BERRY 1019 EIGHT ST  STE 300 GOLDEN CO 80401 (303)279-0190
BERRY PETROLEUM COMPANY 950 17TH ST  STE 2400 DENVER CO 80202 (303)825-3344
BIG RUN PRODUCTION COMPANY 318 WEST RUSK TYLER TX 75701 (903) 595-2990
BISON ENERGY CORPORATION P O BOX 3234 LITTLETON CO 80161 (303)470-8067
BLACK HILLS EXPLORATION AND PRODUCTION INC 350 INDIANA ST STE 400 GOLDEN CO 80401 (720)210-1300
BLACK HILLS PLATEAU PRODUCTION LLC 350 INDIANA ST STE 400 GOLDEN CO 80401 (720)210-1300
BLACK RESOURCES inc 320 MUSTANG TRAIL GRANBURY TX 76049 (817) 279-1144
BLUE & GRAY ENERGY INC 10304 STONEFLOWER DR PARKER CO 80134 (303)840-0186
BLUE CHIP OIL INC 155 E BOARDWALK DR STE 400 FORT COLLINS CO 80525 (970)493-6456
BLUEBELL OIL CO 3350 CTY RD SUITE 102 RANGELY CO 81648 (801) 789-898
BONANZA CREEK OPERATING COMPANY LLC P O BOX 21974 BAKERSFIELD CA 93390 (661)638-2730
BOOCO'S CONTRACT SERVICES INC P O BOX 572 HAYDEN CO 81639 (970) 276-3887
BOPCO LP 201 MAIN ST  STE 3100 FT WORTH TX 79102 (817)390-8400
BP AMERICA PRODUCTION COMPANY 501 WESTLAKE PARK BLVD HOUSTON TX 77079 (970)247-6800
BRIGHT & COMPANY 4228 N CENTRAL EXPRESSWAY DALLAS TX 75206-6534 (214)559-9200
BROWN INC* TOM 555 17TH ST  STE 1850 DENVER CO 80202 (303)260-5000
BROWN OIL & GAS LLC 10481 COUNTY ROAD 20.5 STERLING CO 80751 (970) 522-1072
BTU ENERGY 418 SCHOOL ST RANGELY CO 81648 (970)675-8068
BUEHLER* HOWARD D & VIRGINIA A 10001 W COUNTY 2E BERTHOUD CO 80513 (970) 532-2313
BURLINGTON RESOURCES OIL & GAS LP 3401 E 30TH ST FARMINGTON NM 87402 (505)326-9842
BURR OIL AND GAS INC P O BOX 50 FARMINGTON NM 87499 (505)325-1701
BYRON OIL INDUSTRIES INC 154 CLARKSON EXECUTIVE PARK BALLWIN MO 63011 (636)391-8770
C & J FIELD SERVICES 3650 COUNTY RD #2 RANGELY CO 81648 (970)675-2485
CABOT OIL & GAS CORPORATION 600 17TH ST  STE 900N DENVER CO 80202 (303)226-9400
CALCO DBA CALLISTER CO 2005 300 WEST SALT LAKE CITY UT 84115 (801) 487-4721
CANNON* B G DBA CANNON OIL BOX 333 HAYDEN CO 81639 (970)276-3312
CDM OIL & GAS 950 S CHERRY ST STE 1100 DENVER CO 80222 (303)759-5123
CDX GAS LLC 5485 BELTLINE RD STE 190 DALLAS TX 75254 (972)382-1881
CEDAR RIDGE LLC 484 TURNER DR  BLDG B  STE 3 DURANGO CO 81303 (970)382-5990
CENTRAL OPERATING INC 1600 BROADWAY  STE 1050 DENVER CO 80202 (303)894-9576
CFG ENERGY INC 3932 WEST 18TH STREET LN GREELEY CO 80634 (970) 330-2660
CGT INC 2439 ATWOOD ST LONGMONT CO 80501 (720)494-1592
CHACO ENERGY COMPANY P O BOX 1587 DENVER CO 80201 (303)744-1480
CHANDLER CREEK COMPANIES P O BOX 370286 DENVER CO 80237 (303) 770-3951
CHANDLER DJ BASIN LLC 12303 AIRPORT WAY  STE #130 BROOMFIELD CO 80021 (303)404-9605
CHANDLER ENERGY LLC 475 17TH ST  STE 1210 DENVER CO 80202 (303)297-2028
CHEMCO INC 558 CASTLE PINES PKWY UTB4#402 CASTLE ROCK CO 80104 (303)771-7777
CHESAPEAKE OPERATING INC P O BOX 18496 OKLAHOMA CITY OK 73154-0496 (405)848-8000
CHEVRON MIDCONTINENT LP 11111 S WILCREST HOUSTON TX 77099 (281)561-4927
CHEVRON U S A INC 6001 BOLLINGER CANYON RD SAN RAMON CA 94583 (281)582-5304
CHOLLA PRODUCTION LLC 7851 S ELATI ST  STE 201 LITTLETON CO 80120 (303)623-4565
CHURCHILL ENERGY INC 777 S WADSWORTH BLVD LAKEWOOD CO 80226 (303) 989-7765
CIMARRON OPERATING INC 24165 IH-10 WEST #217-413 SAN ANTONIO TX 78257 (210)325-1355
CINNAMON CREEK OIL & GAS INC P O BOX 544 WALSH CO 81090 (719) 324-5538
CITATION OIL & GAS CORP 8223 WILLOW PLACE SOUTH HOUSTON TX 77070 (281)517-7800
CITY AND COUNTY OF DENVER 8500 PENA BLVD RM 9870 DENVER CO 80249 (303)342-2537
CLAYTON WILLIAMS ENERGY INC 6 DESTA DR STE 3000 MIDLAND TX 79705 (432)682-6324
COASTAL PLAINS ENERGY INC 420 THROCKMORTON  STE 630 FT WORTH TX 76102-3723 (817)882-9055
COASTLINE OPERATING LLC 3100 TIMMONS  STE 520 HOUSTON TX 77027 (713)960-1677
COLEMAN OIL & GAS INC P O DRAWER 3337 FARMINGTON NM 87499 (505)327-0356
COLORADO ENERGY MINERALS INC P O BOX 899 DENVER CO 80201-0899 (303)293-8198
COLORADO INTERSTATE GAS CO P O BOX 1087 COLORADO SPRINGS CO 80944 (719)667-7739
COLTON LIMITED LIABILITY CO 621 17TH ST SUITE 1320 DENVER CO 80293 (303) 298-1567
COMBINED RESOURCES CORP P O BOX 6118 EDMOND OK 73083-6118 (405)341-7700
COMET RIDGE USA INC 600 17TH ST STE 600S DENVER CO 80202-5402 (303)357-4646
CONOCO PHILLIPS COMPANY P O BOX 2197  WL3 4066 HOUSTON TX 77252 (832)486-2329
CONQUEST OIL COMPANY 8203 W 20TH ST STE A GREELEY CO 80634 (970)356-5560
CORAL PRODUCTION CORP 1600 STOUT ST  STE 1500 DENVER CO 80202 (303)623-3573
CREDO PETROLEUM CORP 1801 BROADWAY SUITE 900 DENVER CO 80202 (303) 297-2200
CRIMSON EXPLORATION OPERATING INC 480 N SAM HOUSTON PKWY EAST  STE 300 HOUSTON TX 77060 (281)260-8388
CRUMLEY* JACK 27577 COUNTY ROAD 42 P O BOX 494 AKRON CO  80720-494 (970) 345-6550
CURTON CAPITAL CORP P O BOX 796 VERNAL UT 84078 (435)789-2672
CUTLER BROTHERS 12635 BUCKLEY RD BRIGHTON CO 80601 (303) 659-4469
D & D RESOURCES INC 2835 VILLA WAY STE 4 GRAND JUNCTION CO 81501 (970) 243-7320
D & G ROUSTABOUT SERVICE 765 S 1/2 ROAD MACK CO 81525 (970)858-1581
DAVIS  LLC* EDWARD MIKE 730 17TH ST STE 450 DENVER CO 80202 (720)946-6700
DAVIS PETROLEUM CORP 555 17TH ST STE 1400 DENVER CO 80202 (303)623-1000
DECLAR OIL & GAS INC P O BOX 1455 FORT MORGAN CO 80701 (970) 867-6697
DELTA PETROLEUM CORPORATION 370 17TH ST STE 4300 DENVER CO 80202 (303)293-9133
DEVON ENERGY PRODUCTION COMPANY LP 20 N BROADWAY  STE 1500 OKLAHOMA CITY OK 73102-8260 (405) 235-3611
DIAMOND OIL & GAS INC 119 FOOTHILL DR VACAVILLE CA 95688 (707)451-2256
DIAMOND OPERATING INC 6680 GUNPARK DR  STE 100 BOULDER CO 80301 (303)494-4420
DIAMONDBACK OIL PARTNERS LLP 5990 KIPLING PKWY STE 201 ARVADA CO 80004-4993 (303)432-0025
DIVERSIFIED OPERATING CORPORATION 15000 W 6TH AVE  STE 102 GOLDEN CO 80401 (303)384-9611
DOLPHIN ENERGY CORPORATION 1331 17TH ST  STE 1050 DENVER CO 80202 (303)293-2300
DONNELLY CASING PULLING CO BOX 791 STERLING CO 80751 (970) 522-1410
DOUD OIL & GAS COMPANY LLC 25528 GENESEE TRAIL ROAD GOLDEN CO 80401 (303)462-3604
DRY CREEK PETROLEUM LLC P O BOX 44278 DENVER CO 80201 (303)663-2615
DUGAN PRODUCTION CORP P O BOX 420 FARMINGTON NM 87499-0420 (505) 325-1821
DUKE GAS COMPANY 22500 COUNTY RD 24 VERNON CO 80755 (970) 332-5610
DUNNE EQUITIES OPERATING INC 8100 E 22ND STREET N  #1100 WICHITA KS 67226-2311 (316)684-6508
EAGLE OPERATING INC P O BOX 853 KENMARE ND 58746 (701) 385-4244
EAST RESOURCES INC 301 BRUSH CREEK RD WARRENDALE PA 15086 (724)772-8600
EDDY OIL COMPANY 1875 S MARSHALL CIR LAKEWOOD CO 80232 (303)934-2955
EDDY* HAROLD E & FLORENCE L 153 SUNDANCE DR GRAND JUNCTION CO 81503 (970) 241-3874
EL PASO E & P COMPANY LP 1001 LOUISIANA ST HOUSTON TX 77002 (713)420-2131
EL PASO ENERGY RATON COPORATION P O BOX 190 RATON NM 87740 (505) 445-6726
EL PASO PRODUCTION OIL  & GAS COMPANY 1001 LOUISIANA ST HOUSTON TX 77002 (713)420-2600
ELLORA OPERATING LP 5480 VALMONT RD STE 350 BOULDER CO 80301 (303)444-8881
ELM RIDGE EXPLORATION CO LLC 12225 GREENVILLE AVE  STE 950 DALLAS TX 95243 (972) 889-2100
ENCANA OIL & GAS (USA) INC 370 17TH ST  STE 1700 DENVER CO 80202-5632 (303)389-5060
ENERGY ALLIANCE COMPANY INC 300 N MAIN  STE 309 WICHITA KS 67202 (316)267-0155
ENERGY INVESTMENT PARTNERS LLC P O BOX 225878 DALLAS TX 75222 (214)978-2500
ENERGY OIL AND GAS INC P O BOX 910 NIWOT CO 80544 (303)442-6390
ENERGY OPERATIONS COLORADO LP 4600 S SYRACUSE  9TH FLR DENVER CO 80237 (877)928-6800
ENERGY SEARCH COMPANY 650 S CHERRY ST STE 1011 DENVER CO 80246 (303)320-6546
ENERVEST OPERATING LLC 1001 FANNIN ST STE 800 HOUSTON TX 77002 (713)495-6530
ENPROP INC 9137 E MINERAL CIRCLE STE. 100 CENTENNIAL CO 80112 (303)833-5650
EOG RESOURCES INC 600 17TH ST  STE 1100N DENVER CO 80202 (303) 572-9000
ERG RESOURCES LLC 600 TRAVIS  STE 7050 HOUSTON TX 77001 (713)812-1800
EVERGREEN OPERATING CORPORATION 1401 17TH ST STE 1200 DENVER CO 80202 (303)298-1147
EXCO RESOURCES INC 2829 ROAD 111 SIDNEY NE 69162 (308)254-4825
EXXON MOBIL _OIL_ CORPORATION P O BOX  4358  WGR RM 310 HOUSTON TX 77210-4358 (281)654-1927
EXXON MOBIL CORPORATION P O BOX 4358 HOUSTON TX 77210-4358 (713)431-1125
FAHEY OIL & GAS P O BOX 122 STRASBURG CO 80136 (303) 622-9499
FANCHER OIL LLC 1801 BROADWAY  STE 720 DENVER CO 80202 (303) 296-6600
FAULCONER INC* VERNON E P O BOX 7995 TYLER TX 75711 (903) 581-4382
FEES JR AND SON OIL & GAS* WALTER S 2516 FORESIGHT CIRCLE RM #10 GRAND JUNCTION CO 81501 (970)242-2044
FIDELITY EXPLORATION & PRODUCTION COMPANY 1700 LINCOLN ST  STE 2800 DENVER CO 80203 (303)893-3133
FLOW PRODUCTION COMPANY 6420C N SANTA FE AVE OKLAHOMA CITY OK 73116 (405)840-2552
FLYING J OIL & GAS INC P O DRAWER 130 ROOSEVELT UT 84066 (435)722-5169
FORTITUDE EXPLORATION CO P O BOX 5417 NAVARRE FL 32566 (580)939-6966
FOUNDATION ENERGY MANAGEMENT LLC 5220 SPRING VALLEY RD STE 212 DALLAS TX 75254 (972)934-8385
FOUNTAINHEAD RESOURCES LTD P O BOX 641 LITTLETON CO 80160-0641 (303)488-9983
FOUR STAR OIL & GAS COMPANY 11111 S WILCREST DR HOUSTON TX 77099 (281)561-4896
FRITZ & DIGMAN 826 E NAVAJO FARMINGTON NM 87401 (505) 325-3478
FRITZLER RESOURCES INC P O BOX 114 FORT MORGAN CO 80701 (970) 867-9388
GENESIS GAS & OIL LLC 106 W 14TH ST  7TH FLR KANSAS CITY KS 64105 (816)222-7500
GENESSEE OIL INC P O BOX 608 CASTLE ROCK CO 80104 (303) 694-7200
GEOMET OPERATING COMPANY INC 5336 STADIUM TRACE PKWY  #206 BIRMINGHAM AL 35244 (205)425-3855
GEOTECH PRODUCTION INC 7844 S ESPANA WAY AURORA CO 80016-1918 (303)690-O921
GILBERT-STEWART OPERATING LLC 1801 BROADWAY  STE 450 DENVER CO 80202 (303) 534-1686
GILS HOT OIL SERVICE P O BOX 145 BYERS CO 80103 (303) 622-9751
GORDON ENGINEERING INC P O BOX 3525 GRAND JUNCTION CO 81502 (970) 245-1958
GOSNEY & SONS INC P O BOX 367 BAYFIELD CO 81122 (970) 884-9533
GRAND MESA OPERATING CO 200 EAST FIRST ST  STE 307 WICHITA KS 67202 (316)265-3000
GRAND VALLEY RESOURCES INC P O BOX 39 RANGELY CO 81648 (970)675-2639
GRAYHORSE OPERATING INC 20 EAST 5TH ST  STE 320 TULSA OK 74103 (918) 382-9201
GREAT WESTERN OIL & GAS CO LLC 252 CLAYTON ST  4TH FLR DENVER CO 80206 (303)393-0033
GRIFFIN MANAGEMENT LLC P O BOX 670 BYERS CO 80103 (720)490-5648
GRYNBERG* JACK J 5299 DTC BLVD STE 500 GREENWOOD VILLAGE CO 80111-3326 (303)850-7490
GSL ENERGY CORPORATION 1875 LAWRENCE ST  STE 1400 DENVER CO 80202 (303)572-8900
GUNNISON ENERGY CORPORATION 1601 FORUM PL  STE 1400 WEST PALM BEACH FL 33401 (561)697-4300
H & M PETROLEUM CORPORATION 731 N WEBER ST  STE 200 COLORADO SPRINGS CO 80903 (719)590-6060
H & R WELL SERVICES INC 17509 ROAD 14 FORT MORGAN CO 80701 (970) 867-9007
HAINES* RICHARD P O BOX 114 EVANS CO 80620 (303) 339-5956
HALCYON EXPLORATION COMPANY LLC 1580 LINCOLN ST STE 630 DENVER CO 80203-3510 (303)832-1555
HALDE OIL INC P O BOX 234 CHEYENNE WELLS CO 80810 (719) 767-5729
HAUG* WANDA 5 CRESTWOOD DRIVE KIMBALLL NE 69145 (308) 235-4342
HIGHLINE OPERATING LLC P O BOX 20057 TUSCALOOSA AL 35402 (205)752-3339
HILCORP ENERGY COMPANY P O BOX 61229 HOUSTON TX 77208 (713)209-2400
HOLCOMB OIL & GAS INC P O BOX 2058 FARMINGTON NM 87499 (505)326-0550
HOLMES EXPLORATION INC P O BOX 3105 TULSA OK 74101 (918)583-1396
HOMESTEAD OIL INC 16880 WILD PLUM CIRCLE MORRISON CO 80465 (303) 697-772
HOUSTON EXPLORATION COMPANY* THE 1100 LOUISIANA  STE 2000 HOUSTON TX 77002 (713)830-6800
HRBEK* RANDALL L ROUTE 1  BOX 11 MERINO CO 80741 (303) 522-4115
HRM RESOURCES LLC P O BOX 608 CASTLE ROCK CO 80104 (303)694-7200
HUBBS FAMILY TRUST* TED R 7994 E SADDLEBACK DR KINGMAN AZ 86401 (520) 692-6208
HUBER CORPORATION* J M 1050 17TH ST STE 700 DENVER CO 80265 (303)825-7900
HUNTER ENERGY LLC 8000 S CHESTER ST  STE 375 CENTENNIAL CO 80112 (303)480-0880
HUNTINGTON ENERGY LLC 908 NW 71ST OKLAHOMA CITY OK 73116 (405)840-9876
HYNDREX RESOURCES 300 E 16TH ST  STE 201 GREELEY CO 80631 (970)336-8830
INDUSTRIAL GAS SERVICES INC 4891 INDEPENDENCE ST STE 200 WHEATRIDGE CO 80033 (303) 422-3400
INFINITY OIL & GAS OF WYOMING INC 633 17TH ST  STE 1800 DENVER CO 80202 (720)932-7800
JACO INC* TROY P O BOX 1476 SHERMAN TX 75091 (903)868-2703
JAVERNICK OIL 3040 E MAIN CANON CITY CO 81212 (719) 275-3040
JAVERNICK* JULIA K 3040 E MAIN CANON CITY CO 81212 (719)275-6439
JETTA OPERATING COMPANY INC 777 TAYLOR ST  STE PI-D FT WORTH TX 76102 (817) 335-1179
JFH OIL & GAS LLC P.O. BOX 967 STRASBURG CO 80136 (303)622-9499
JL OIL COMPANY 3992 ROAD Y5 WELDONA CO 80653 (303) 645-2367
JOHNSON INC* DEA 10583 VAN GORDON WAY WESTMINSTER CO 80021 (303)438-9600
JON DRINDAK 8858 COUNTY RD #2 RANGELY CO 81648 (970) 675-2108
JOURNEY OPERATING LLC. 1201 LOUISIANA  STE 1040 HOUSTON TX 77002 (713) 655-0595
JULANDER ENERGY COMPANY 7887 E BELLEVIEW AVE STE 1275 ENGLEWOOD CO 80111 (303)831-7800
JUSTIN ENERGY LLC 1776 LINCOLN ST STE 1300 DENVER CO 80203 (303)830-0998
J-W OPERATING COMPANY 7074 S REVERE PKWY CENTENNIAL CO 80112 (303)422-4990
K C RESOURCES INC P O BOX 1118 CARDIFF CA 92007 (760)753-4337
K P KAUFFMAN COMPANY INC 1675 BROADWAY STE 2800 DENVER CO 80202 (303)825-4822
KAISER-FRANCIS OIL COMPANY P O BOX 21468 TULSA OK 74121 (915)491-4694
KCS RESOURCES INC 5555 SAN FELIPE  STE 1200 HOUSTON TX 77056 (713)877-8006
KENNEC TRUSTEE* FRANK 3130 TEMPLETON GAP RD COLORADO SPGS CO 80907 (719) 632-8271
KERR-MCGEE OIL & GAS ONSHORE LP 1999 BROADWAY  STE 3700 DENVER CO 80202 (303) 296-3600
KESTREL RESOURCES INC 2602 MCKINNEY AVE  STE 400 DALLAS TX 75204 (214)871-0999
KGH OPERATING COMPANY P O BOX 2235 BILLINGS MT 59103-2235 (406) 259-8480
KILO ENERGY GROUP LLC 117 LANDMARK SQ VIRGINIA BEACH VA 23452 (757)321-6936
KINDER MORGAN CO2 COMPANY LP P O BOX 281304 LAKEWOOD CO 80228-8304 (303)989-1740
KINDER MORGAN RETAIL ENERGY SERVICES COMPANY 370 VAN GORDON ST LAKEWOOD CO 80228-8304 (303)914-7975
KISSLER* DANIEL 22956 E MINERAL PL AURORA CO 80016 (720)269-4779
KLABZUBA OIL & GAS INC 930 WEST 1ST ST  4TH FLR FT WORTH TX 76102 (817)336-5757
KOCH EXPLORATION COMPANY LLC 9777 PYRAMID CT STE 210 ENGLEWOOD CO 80112 (303)325-2560
KODIAK PETROLEUM INC P O BOX 4677 ENGLEWOOD CO 80155 (303)790-7550
KUGLER DBA D-J OIL COMPANY* DEAN L P O BOX 72 NEW RAYMER CO 80742 (970) 437-5460
KYKON OIL & GAS INC P O BOX 1197 BILLINGS MT 59103 (406)248-3757
L & B OIL COMPANY(LESLIE & BETTY SESSIONS) BOX 182 MERINO CO 80741 (970) 522-7175
LABARON* ROBERT G 1525 N 1ST STREET GRAND JUNCTION CO 81501 (970)242-5200
LAMAR OIL & GAS EXPLORATION P O BOX 246 WILEY CO 81092 (719)829-4350
LANCE OIL & GAS COMPANY INC 1099 18TH ST  STE 1200 DENVER CO 80202-1964 (303) 452-5603
LARAMIE ENERGY INC 1512 LARIMER ST STE 1000 DENVER CO 80202 (303)339-4400
LINN BROS OIL & GAS INC. P O BOX 416 FRUITA CO  81521-416 (303) 858-7386
LOCIN OIL CORPORATION 25231 GROGAN'S MILL RD STE 500 THE WOODLANDS TX 77380 (281)362-8600
LOEB  SOLE PROPRIETOR* HERMAN P O BOX 524 LAWRENCEVILLE IL 62439 (618) 943-2227
LONE MOUNTAIN PRODUCTION CO P O BOX 80965 BILLINGS MT 59108-0965 (406)245-5077
LONE PINE GAS INC 6704 E LONG AVE ENGLEWOOD CO 80112 (303)770-4258
LORENTZ OIL & GAS LLC 3501 FRENCH PARK DR EDMOND OK 73034 (405)844-3750
LUDWICK* JAMES L P O BOX 70 FARMINGTON NM 87499 (505) 325-1079
LUNDVALL OIL & GAS P O BOX 632 GREELEY CO 80632 (970)339-8730
LYSTER OIL CO 701 COUNTY ROAD 105 CRAIG CO 81625 (970) 824-3536
LYSTER* BRANDON L. 19522 COUNTY ROAD 17 CRAIG CO 81625 (970)826-0170
M E III CORPORATION 14182 W 4TH AVE GOLDEN CO  80401-521 (303) 279-4429
MACHII-ROSS PETROLEUM CO 2901 28TH ST STE 205 SANTA MONICA CA 90405 (310)450-5666
MAGPIE OPERATING INC 2707 SOUTH COUNTY RD 11 LOVELAND CO 80537 (970)669-6308
MALLON OIL COMPANY 350 INDIANA ST  STE 400 GOLDEN CO 80401 (720)210-1300
MANZANO LLC P O BOX 2107 ROSWELL NM 88202 (505)623-1996
MARALEX RESOURCES INC P O BOX 338 IGNACIO CO 81137 (970) 563-4000
MARKUS PRODUCTION 621 17TH ST  STE 1710 DENVER CO 80293 (303) 295-6910
MARTY BROTHERS 8834 EAST 96TH AVE HENDERSON CO 80640 (303) 288-645
MASTORAKOS* D A P O BOX 1086 NOVATO CA 94948 (415)897-8881
MATRIX ENERGY LLC P O BOX 3160 DURANGO CO 81301 (970)247-1959
MATRIX PRODUCTION COMPANY 5725 COMMONWEALTH BLVD SUGAR LAND TX 77479 (281)265-1212
MCCARTNEY ENGINEERING LLC 4251 KIPLING ST STE 575 WHEAT RIDGE CO 80033 (303) 830-7208
MCELVAIN OIL & GAS PROPERTIES 1050 17TH ST  STE 1800 DENVER CO 80265 (303)893-0933
MCKENZIE JUNCTION MA LLC 1000 ALPINE STE 100 BOULDER CO 80304 (303)442-2150
MCLANE TRUST* DIXIE P O BOX 420 FARMINGTON NM 87499-0420 (972)999-4607
MCRAE & HENRY LTD 1600 STOUT ST  STE 580 DENVER CO 80202 (303) 623-5999
MCWHINNEY HOLDING COMPANY LLLP 2725 ROCKY MOUNTAIN AVE  #200 LOVELAND CO 80538 (970)962-9990
MERIT ENERGY COMPANY 13727 NOEL ROAD  STE 500 DALLAS TX 75240 (972)701-8377
MERRION OIL & GAS CORP 610 REILLY AVENUE FARMINGTON NM 87401 (505) 327-9801
MESMER DBA CONTINENTAL ENERGY SERVICE* DAVID L 20055 ROAD 17 FORT MORGAN CO 80701 (970)867-9342
MF ENERGY LLC 2580 UNIVERSITY AVE GREEN BAY WI 54311 (920)468-4000
MONAGO OPERATING INC 1951 MONTVIEW DR GREELEY CO 80631 (970)356-0878
MONAHAN GAS & OIL INC 1951 MONTVIEW DR GREELEY CO 80631 (970)356-0878
MONAHAN* REX P O BOX 1231 STERLING CO 80751 (970)522-0774
MONT ROUGE INC 1011 S VALENTIA ST  #16 DENVER CO 80247-6813 (303)369-1780
MONUMENT GAS MARKETING INC P O BOX 950 MONUMENT CO 80132-0950 (719) 481-8029
MOUNTAIN PETROLEUM CORP 1801 BROADWAY  STE 1250 DENVER CO 80202 (303)296-1500
MULL DRILLING COMPANY INC P O BOX 2758 WICHITA KS 67201-2758 (316)264-6366
MURCHISON OIL & GAS INC 1100 MIRA VISTA BLVD PLANO TX 75093-4698 (972)931-0701
MURFIN DRILLING COMPANY INC 250 N WATER ST  STE 300 WICHITA KS 67202 (316)267-3241
NANCE PETROLEUM CORPORATION 550 N 31ST ST STE 500 BILLINGS MT 59101 (406)245-6248
NATIONAL FUEL CORPORATION 7979 E TUFTS AVE PKWY DENVER CO 80237-2843 (303)220-7772
NIELSON & ASSOCIATES INC P O BOX 2850 CODY WY 82414 (307) 587-2445
NIOBRARA ILLUMINATING GAS ASSOCIATES LLC 8310 S VALLEY HWY  3RD FLR ENGLEWOOD CO 80112 (303)524-1178
NOBLE ENERGY INC 100 GLENBOROUGH  STE 100 HOUSTON TX 77067 (281)876-6105
NOBLE ENERGY PRODUCTION INC 1625 BROADWAY  STE 2000 DENVER CO 80202 (303)389-3600
NONSUCH NATURAL GAS INC 5621 STRAND BLVD  STE 211 NAPELS FL 34110 (239)598-9999
NORSTAR PETROLEUM INC 5 INVERNESS DRIVE EAST  STE 120 ENGLEWOOD CO 80112 (303)925-0696
NORTH FINN LLC 950 STAFFORD CASPER WY 82609 (307) 237-7854
NORTHERN MICHIGAN OIL & GAS CORPORATION P O BOX 225365 DALLAS TX 75222 (214)941-0711
NORTHLAND ROYALTY OPERATING CO 3030 FOURTH AVENUE NORTH BILLINGS MT 59101 (406) 259-5400
NORTHSTAR GAS COMPANY INC 14504 BRIAR FOREST DR #1114 HOUSTON TX 77077 (281)493-5532
O'BRIEN ENERGY RESOURCES CORP 75 CONGRESS ST STE 103 PORTSMOUTH NH  3801-2499 (603) 427-2099
OILFIELD OPERATING COMPANY P O BOX 1564 CUSHING OK 74023 (918) 225-2334
OKT RESOURCES LLC 1900 E 15TH  BLDG 600 EDMOND OK 73013 (405)285-1140
ONEOK RESOURCES COMPANY P O BOX 871 TULSA OK 74103-4298 (918) 588-7700
ORR ENERGY LLC 826 9TH ST  #200 GREELEY CO 80631 (970)351-8777
ORR PRODUCTION CORP P O BOX 7663 MIDLAND TX 79708 (915) 694-8228
OVERLAND RESOURCES LTD 10807 CEDAR BROOK ST HIGHLANDS RANCH CO 80126 (303)346-2572
OXBOW PROPERTIES INC 7433 S CLARKSON CIR CENTENNIAL CO 80122-1422 (303)798-2264
OXY USA INC 5 GREENWAY PLAZA  STE 110 HOUSTON TX 77046 (713)215-7000
OXY USA WTP LP P O BOX 27757 HOUSTON TX 77046 (713)215-7232
P & M PETROLEUM MANAGEMENT LLC 518 17TH ST  STE 400 DENVER CO 80202 (303) 260-7129
PABLO OPERATING COMPANY 777 MAIN ST  STE 3250 FT WORTH TX 76102 (817)332-1328
PADCO LLC P O BOX 5275 BEVERLY HILLS CA 90209-5275 (310) 276-3154
PALADIN ENERGY PARTNERS LLC 410 17TH ST STE 1200 DENVER CO 80202 (303)893-6621
PAPE OILFIELD SERVICE INC P O BOX 66 BENNETT CO 80102 (307)472-5257
PARK ENERGY PETROLEUM LLC P O BOX 825 WALDEN CO 80480 (307)871-2007
PEACOCK EXPLORATION LLC 1100 NE LOOP 410 STE 724 SAN ANTONIO TX 78209 (210)824-1471
PELICAN HILL OIL & GAS INC 1401 N EL CAMINO REAL  STE 207 SAN CLEMENTE CA 92672 (949)498-2101
PETERSON ENERGY OPERATING INC 1805 MORNING DRIVE LOVELAND CO 80538 (970) 669-7411
PETRA OLEUM CORP P O BOX 2148 MIDLAND TX 79702 (432) 687-1033
PETRO MEX RESOURCES P O BOX 6724 FARMINGTON NM 87499 (505)632-5948
PETRO-CANADA RESOURCES (USA) INC 1099 18TH ST  STE 400 DENVER CO 80202 (303)297-2300
PETROCORP INCORPORATED P O BOX 702500 TULSA OK 74170 (918)493-7700
PETROGLYPH ENERGY INC 555 S COLE RD BOISE ID 83707 (208)685-7600
PETROGULF CORPORATION 518 17TH ST  STE 1455 DENVER CO 80202 (303) 893-5400
PETROLEUM DEVELOPMENT CORP 103 E MAIN ST BRIDGEPORT WV 26330 (304)842-6256
PETROLEUM ENERGY CORP 90 SILVER FOX DR GREENWOOD VILLAGE CO 80121 (303)741-9504
PETROLEUM MANAGEMENT LLC 20203 HIGHWAY 60 PLATTEVILLE CO 80651 (970)737-1090
PETRON DEVELOPMENT COMPANY 1899 W LITTLETON BLVD LITTLETON CO 80120 (303) 794-5300
PETROX RESOURCES INC 39868 HIGHWAY 13 MEEKER CO 81641 (970) 878-5594
PICEANCE OPERATING COMPANY LLC 950 17TH ST  STE 2400 DENVER CO 80202 (303)825-3344
PILAND RESOURCES 43651 E 38TH AVE BENNETT CO 80102 (303) 644-6435
PINTAIL PETROLEUM LTD 225 N. MARKET #300 WICHITA KS 67202 (316) 263-2243
PIONEER NATURAL RESOURCES USA INC 1401 17TH ST STE 1200 DENVER CO 80202 (303)298-8100
PONCHO PRODUCTION CO HC 2 BOX 14 KEYES OK 73947 (580)696-2883
PRECISIONEERING INC 190 JASMINE ST DENVER CO 80220 (303) 355-1542
PREMIUM OIL CO 2005 SOUTH 300 WEST SALT LAKE CITY UT 84115 (801)487-4721
PRESCO INC 10200 GROGAN'S MILL RD THE WOODLANDS TX 77380 (281)292-7792
PRIME OPERATING COMPANY 9821 KATY FREEWAY  STE 1050 HOUSTON TX 77042 (713)735-0000
PRODUCTION MANAGEMENT INC 5000 BUTTE ST  #107 BOULDER CO 80301 (303)449-0557
PUCKETT ENERGY CO 5460 S QUEBEC ST SUITE 250 GREENWOOD VLG CO  80111-191 (303) 773-1094
PUCKETT-WARREN OIL CO 1899 W LITTLETON BLVD LITTLETON CO 80120 (303) 794-5300
QUANTUM RESOURCES MANAGEMENT LLC 1775 SHERMAN ST  STE 1525 DENVER CO 80203 (303)861-1170
QUESTAR EXPLORATION AND PRODUCTION COMPANY 1050 17TH ST STE 500 DENVER CO 80265 (303)672-6957
RDT PROPERTIES INC 2431 E 61ST ST  STE 850 TULSA OK 74136 (918)743-2360
RED MOUNTAIN ENERGY LLC 1050 17TH ST STE 1660 DENVER CO 80265 (970)563-0145
RED RIVER RANCH HOLDINGS LLC 1251 AVENUE OF THE AMERICAS  17TH FLR NEW YORK NY 10020 (212)782-7078
RED WILLOW PRODUCTION CO P O BOX 642 IGNACIO CO 81137 (970)563-0145
RED WILLOW PRODUCTION LLC P O BOX 737 IGNACIO CO 81137 (970)563-0145
REDWINE RESOURCES INC 8214 WESTCHESTER  STE 740 DALLAS TX 75225 (214)691-5800
RENEGADE OIL & GAS COMPANY LLC P O BOX 460413 AURORA CO 80046-0413 (303) 680-4725
REYNOLDS* NOEL BOX 356 FLORA VISTA NM 87415 (505)334-3760
RIATA ENERGY INC 1601 NW EXPRESSWAY STE 1600 OKLAHOMA CITY OK 73118 (405)753-5500
RICHARDS/BELNAP INTERESTS INC P O BOX 52852 LAFAYETTE LA  75050-285 (318) 233-2004
RICHARDSON OPERATING COMPANY 5600 S QUEBEC ST  STE 130-B GREENWOOD VILLAGE CO 80111 (303) 830-8000
RIM OPERATING INC. 5 INVERNESS DRIVE EAST ENGLEWOOD CO 80112 (303) 799-9828
RIO MESA RESOURCES INC 226 1/2 E MAIN ST RANGELY CO 81648 (970)675-8491
RITCHIE EXPLORATION INC P O BOX 783188 WICHITA KS  67278-318 (316) 691-9500
RIVIERA DRILLING & EXPL CO 1441 N MAYFAIR RD MILWAUKEE WI 53226-3253 (414) 771-1600
ROCKIES OIL & GAS INC 871 GREELEY AVE JOHNSTOWN CO 80534 (970) 587-5078
ROSETTA RESOURCES OPERATING LP 717 TEXAS  STE 2800 HOUSTON TX NULL (713)335-4000
ROSEWOOD RESOURCES INC 2711 N HASKEL AVE  #2800 LB22 DALLAS TX 75204-2944 (214)756-6618
RUTH*  ULA PEARL 120 N DEVINE RD VANCOUVER WA 98661 (360)695-9502
RWL ENTERPRISES INC P O BOX 2312 BAKERSFIELD CA 93303 (661)589-4144
S & S OIL & GAS OPERATING 107 N 4TH  STE 209 PONCA CITY OK 74601 (580)765-8010
SAMOTLOR PETROLEUM INVESTMENTS LLC 2603 OAK LAWN AVE  STE 300 DALLAS TX 75219 (888)645-1925
SAMSON RESOURCES COMPANY TWO WEST SECOND ST TULSA OK 74103 (918) 583-1791
SAN MARCO PETROLEUM INC 240 MILWAUKEE ST  STE 1000 DENVER CO  80206-500 (303) 321-100
SAND HILLS SOCIETY 8310 S VALLEY HWY 3RD FLR ENGLEWOOD CO 80112 (303)524-1178
SANDLIN OIL CORP 621 17TH ST SUITE 2055 DENVER CO 80293 (303) 292-3313
SCHMID PROPERTIES INC PO BOX 389 HICO TX 76457 (254)796-2100
SCHNEIDER ENERGY SERVICES INC P O BOX 297 FORT MORGAN CO 80701 (970)867-9437
SCHREIDER & COMPANY INC 240 W JESSUP ST BRIGHTON CO 80601 (303) 659-8203
SCHUTZ* HAROLD P O BOX 5 CHROMO CO 81128 (970) 264-5883
SETEX OIL & GAS COMPANY 480 N SAM HOUSTON PKWY E #300 HOUSTON TX 77060 (281)260-8388
SG INTERESTS I LTD P O BOX 2677 DURANGO CO 81302 (970)259-2701
SHAHAN & SONS P O BOX 36 CHROMO CO 81128 (970) 264-2416
SHAWNEE OIL DEVELOPMENT CO INC P O BOX 300 KEVIN MT 59454 (406)873-5277
SHELBY RESOURCES LLC 5893 SADDLE CREEK TRAIL PARKER CO 80134 (303)840-2183
SIMMONS  INC.* D. J. 1009 RIDGEWAY PL  STE 200 FARMINGTON NM 87401 (505)326-3753
SKAER PROPERTIES LTD PARTNERSHIP 3054 S COUNTY ROAD 13 LOVELAND CO 80537 (970) 962-9992
SLATE RIVER RESOURCES LLC 418 MAIN ST  STE 18 VERNAL UT 84078 (435)781-1870
SMITH ENERGY CORP 1640 37TH AVE GREELEY CO 80634 (970)330-7034
SMITH ENERGY LIMITED PARTNERSHIP 1988 600 GREENTREE LN ADA MI 49301 (616)682-0004
SMITH OIL PROPERTIES INC 518 17TH ST  STE 360 DENVER CO 80202-4104 (303)825-7405
SONTERRA ENERGY LLC P O BOX 17103 WICHITA KS 67217 (316)262-4800
SOPER PRODUCTION P O BOX 190 KIMBALL NE 69145-0190 (308)235-3533
SOUTH OIL INC 5868 WESTHEIMER STE 485 HOUSTON TX 77057 (713)784-1113
SOVEREIGN ENERGY LLC 621 17TH ST  STE 1520 DENVER CO 80293 (303)297-0347
ST CROIX OPERATING INC P O BOX 13799 DENVER CO 80201 (303)534-4597
ST. JAMES ENERGY OPERATING INC 11177 EAGLE VIEW DR  STE 1 SANDY UT 84092 (801)576-1154
STANDLEY DBA OTIS ENERGY* ROBT. K 327 S VINE ST OTIS CO 80743-9296 (970) 246-3439
STAR ACQUISITION VIII LLC 1099 18TH ST STE 600 DENVER CO 80202 (303)296-1434
STARLIGHT CORPORATION 1520 WEST CANAL CT  STE 130 LITTLETON CO 80120 (720)922-3119
STARLIGHT RESOURCES LLC 1520 WEST CANAL CT  STE 130 LITTLETON CO 80128 (720)922-3119
STEHLE OIL COMPANY P O BOX 1577 CRAIG CO 81626 (303) 824-6909
STELBAR OIL CORP INC 155 NORTH MARKET  STE 500 WICHITA KS 67202 (316)264-8378
STEPHENS  ENERGY COMPANY LLC 1825 LAWRENCE ST  STE 300 DENVER CO 80202 (303)296-2012
STEPHENS* JAMES R 3604 SAN BAR LANE COLLEYVILLE TX 70634 (817) 485-4040
STERLING ENERGY COMPANY 1200 17TH ST  STE 1000 DENVER CO 80202 (720)946-6105
STRACHAN EXPLORATION INC 383 INVERNESS DR SOUTH STE 360 ENGLEWOOD CO 80116 (303)785-7006
SUMMIT OPERATING LLC P O BOX 683909 PARK CITY UT 84068 (435)940-9001
SUNDANCE RESOURCES. INC. 4925 N O'CONNOR RD  STE 101 IRVING TX 75062-2760 (214) 741-1900
SURE OIL COMPANY 136 S MAIN ST  STE 712 SALT LAKE CITY UT 84101 (801)328-9452
TARPON OIL COMPANY P O BOX 471009 FT WORTH TX 76147 (817)740-0678
TATONKA OIL AND GAS COMPANY INC 1515 ARAPAHOE ST TOWER 1 10TH FLR DENVER CO 80202 (303)476-4100
TAYLOR* ROSE JUNE 6769 MT LENEVE DR SAN JOSE CA 95120 (408)997-9131
TERRA EXPLORATION & PRODUCTION COMPANY 1250 E 23RD ST 2ND FLR SIGNAL HILL CA 90806 (562)427-3633
TEXAKOMA OPERATING LP 5400 LBJ FREEWAY  STE 500 DALLAS TX 75240 (972)701-9106
TEXAS AMERICAN RESOURCES COMPANY 410 17TH STREET SUITE 1610 DENVER CO 80202 (720)279-6805
TEXAS TEA LLC 601 16TH  C344 GOLDEN CO 80401 (303)216-1262
TEXON OIL & GAS CO. LLC 965 S FULTON AVE FT LUPTON CO 80621 (303)857-6045
THOMAS L SPRING LLC 7400 E ORCHARD RD  STE 2000 GREENWOOD VILLAGE CO 80111 (303) 771-1889
THOMAS OPERATING COMPANY INC 2102 45TH AVENUE CT GREELEY CO 80634 (970) 353-2861
THOMPSON & JAMES CLEO THOMPSON JR & J CLEO 325 N SAINT PAUL  STE 4300 DALLAS TX 75201-3993 (214)953-1177
TIGGES OIL LLC 12406 WCR 64 1/2 GREELEY CO 80631 (970)686-2836
TIMBERLINE ENERGY INC 415 S 5TH ST LARAMIE WY 82070 (307)755-9000
TIMKA RESOURCES LTD 2116 SE 14TH ST LOVELAND CO 80537 (970) 667-9861
TINDALL OPERATING COMPANY 12741 E CALEY  STE 142 ENGLEWOOD CO 80111 (303) 850-7272
TIPPERARY OIL & GAS CORP 10111 RICHMOND AVE STE 500 HOUSTON TX 77042 (713)986-1749
TOM FENNO PRODUCTION LLC 1707  AVIAN DR FORT COLLINS CO 80525 (970) 221-4100
TOP OPERATING COMPANY 10881 ASBURY AVE STE 230 LAKEWOOD CO 80227 (303)727-9915
TRUE OIL LLC P O BOX 2360 CASPER WY 82601 (307) 237-9301
TUDEX PETROLEUM INC 2929 15 ST NE CALGARY AB T2E 7L8 (403)291-5146
TWIN ARROW INC 1520 WEST CANAL CT  STE 130 LITTLETON CO 80128 (720)922-3119
TYLER ROCKIES EXPLORATION LTD BOX 119 TYLER TX 75710 (903)595-4886
UMAD LLC 9430 NEWTON ST WESTMINSTER CO 80031 (303)427-5154
UNIOIL P O BOX 310 EVANS CO 80620 (970) 330-6300
UNION OIL CO OF CALIFORNIA P O BOX 760 MOAB UT 84532 (435)686-7676
UNITED STATES EXPLORATION INC 1500 POLY DR STE 100 BILLINGS MT 59102 (406)294-5990
VESSELS COAL GAS INC 730 17TH ST DENVER CO 80202 (303)534-0488
VISTA OPERATING INC 61 MCMURRAY RD STE 300 PITTSBURGH PA 15241 (412)833-8884
VISUAL OPTICS INC 1410 SOUTH 7TH AVE P O BOX 950 STERLING CO 80751 (970) 522-1832
WALKER OIL & GAS CO LLC* KEITH F 219 STANLEY ARDMORE OK 73402 (580) 223-1575
WALKING A GRAZING ASSN 31451 COUNTY RD V ECKLEY CO 80727 (970) 359-2234
WALLACE OIL & GAS INC 3535 NW 58TH ST  STE 940 OKLAHOMA CITY OK 73112 (405) 948-1100
WALSH PRODUCTION INC P O BOX 30 STERLING CO 80751 (970) 522-1839
WARD & SON* AL P O BOX 737 OGALLALLA NE 69153 (308) 284-8350
WELLINGTON OPERATING COMPANY 6065 S QUEBEC ST  STE 201 ENGLEWOOD CO 80111 (303)220-5399
WESCO OPERATING INC P O BOX 1706 CASPER WY 82602 (307)472-4618
WESTERN GAS RESOURCES INC 1099 18TH ST  STE 1200 DENVER CO 80202 (303) 452-5603
WESTERN GAS RESOURCES-SAND WASH INC 1099 18TH ST  STE 1200 DENVER CO 80202 (303)452-5603
WESTERN INTERIOR ENERGY INC. P O BOX 247 CRESTED BUTTE CO 81224 (970)349-5883
WESTERN OIL & GAS DEVELOPMENT P O BOX 470 ROBINSON IL 62454 *
WESTERN OPERATING COMPANY 518 17TH ST  STE 1680 DENVER CO 80202 (303)893-2438
WESTGATE OIL CO P O BOX 782228 WICHITA KS  67278-222 (316) 685-5908
WESTPORT OIL & GAS COMPANY LP 1999 BROADWAY STE 3700 DENVER CO 80202 (303)296-3600
WEXPRO COMPANY P O BOX 45601 SALT LAKE CITY UT 84145-0601 (801)324-2834
WHITEWING RESOURCES LLC 518 17TH ST STE 250 DENVER CO 80202 (303)623-0809
WHITING OIL AND GAS CORPORATION 1700 BROADWAY  STE 2300 DENVER CO 80290 (303)837-1661
WIEPKING-FULLERTON ENERGY LLC 4600 S DOWNING ST ENGLEWOOD CO 80110 (303)789-1798
WILLIAMS PRODUCTION COMPANY LLC P O BOX 3102 MS-37-4 TULSA OK 74101 (800)945-5426
WILLIAMS PRODUCTION RMT COMPANY 1515 ARAPAHOE ST  STE 1000 DENVER CO 80202 (303) 572-3900
WILLIAMS* ROBERT G 20151 COUNTY ROAD 22 HUGO CO 80821 (719) 446-5252
WILLIFORD ENERGY COMPANY 6100 S YALE AVE  STE 2000 TULSA OK 74136 (918)493-2300
WILLIFORD RESOURCES LLC 6506 S LEWIS AVE STE 102 TULSA OK 74136 (918) 493-2300
WINDSOR ENERGY GROUP LLC 14313 N MAY AVE STE 100 OKLAHOMA CITY OK 73134 (405)848-8807
WINSLOW RESOURCES INC 2840 BERRY LANE GOLDEN CO 80401 (303) 279-1629
WISE* WAYNE L P O BOX 5116 ENGLEWOOD CO 80155 (303) 741-3396
WOLCOTT* DEAN E 5890 COUNTY RD 38 MANCOS CO 81328 *
WOLD OIL PROPERTIES INC 139 W SECOND ST STE 200 CASPER WY 82601 (307) 265-7252
WOLFE* GEORGE H P O BOX 231 PENROSE CO 81240 (719)547-1160
WRIGHT* ROBERT L P O BOX 1196 CORTEZ CO 81321 (970)565-8349
WYMAN  *LOUIS M P O BOX 278 CRAIG CO 81626 (303) 824-6431
WYOMING PACIFIC ENERGY LLC 3020 OLD RANCH PKWY STE 300 SEAL BEACH CA 90740 (562)799-5722
XOG OPERATING LLC P O BOX 352 MIDLAND TX 79702 (432)683-3171
XTO ENERGY INC 382 RD 3100 AZTEC NM 87410 (505)333-3100
YATES PETROLEUM CORPORATION 105 SOUTH 4TH ST ARTESIA NM 88210 (505) 748-1471
YOUNG GAS STORAGE COMPANY LTD P O BOX 1087 COLORADO SPGS CO 80944 (719) 473-2300

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* Not available at this time