| 498281Amendment | Aug 9, 2000 | Aug 9, 2000 | KCS Medallion Resources, Inc. | Sawyer 143 #17 | 7,200 | 43535219 |
| 498281Amendment | Aug 9, 2000 | Aug 9, 2000 | KCS Medallion Resources, Inc. | Sawyer 143 #17 | 7,200 | 43535219 |
| 498235 | Aug 8, 2000 | Aug 8, 2000 | Burlington Resources Oil&gas Co. | Steen #45 | 5,900 | 43535216 |
| 498182 | Aug 7, 2000 | Aug 7, 2000 | KCS Medallion Resources, Inc. | Genini #3308 | 5,800 | 43535215 |
| 498181 | Aug 7, 2000 | Aug 7, 2000 | KCS Medallion Resources, Inc. | Genini #3307 | 5,800 | 43535214 |
| 498081 | Aug 4, 2000 | Aug 4, 2000 | KCS Medallion Resources, Inc. | Sawyer 145 #16 | 7,200 | 43535213 |
| 498080 | Aug 4, 2000 | Aug 4, 2000 | KCS Medallion Resources, Inc. | Miers A #1521 | 5,800 | 43535212 |
| 498080Amendment | Aug 4, 2000 | Aug 4, 2000 | KCS Medallion Resources, Inc. | Miers A #1521 | 6,100 | 43535212 |
| 498069 | Aug 4, 2000 | Aug 4, 2000 | EOG Resources, Inc. | Granger Bluff #1201 | 9,300 | 43535210 |
| 498023 | Aug 3, 2000 | Aug 3, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Fawcett, Randee #B 1 | 7,700 | 43532924 |
| 498022 | Aug 3, 2000 | Aug 3, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer #33 | 8,350 | 43535207 |
| 498021 | Aug 3, 2000 | Aug 3, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer #32 | 8,350 | 43535208 |
| 498020 | Aug 3, 2000 | Aug 3, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 5 #34 | 8,350 | 43535209 |
| 498019 | Aug 3, 2000 | Aug 3, 2000 | Burlington Resources Oil&gas Co. | Deberry-Meckel Unit #9 | 6,300 | 43535206 |
| 497987 | Aug 2, 2000 | Aug 2, 2000 | Burlington Resources Oil&gas Co. | Deberry-Boyette Unit #7 | 6,600 | 43535205 |
| 497938 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer #31 | 8,350 | 43535198 |
| 497937 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 57 #4 | 6,100 | 43535199 |
| 497936 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 58 #10 | 6,000 | 43535200 |
| 497935 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 59 #3 | 6,000 | 43535201 |
| 497934 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 53 #5 | 6,300 | 43535202 |
| 497933 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 99 #15 | 6,600 | 43535203 |
| 497932 | Aug 1, 2000 | Aug 1, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 111 #15 | 6,800 | 43535204 |
| 497837 | Jul 31, 2000 | Jul 31, 2000 | Burlington Resources Oil&gas Co. | Barton #12 | 9,700 | 43535197 |
| 497744 | Jul 27, 2000 | Jul 27, 2000 | Dreyfus, Louis Natural Gas Corp | Hudspeth 54 #01 | 8,650 | 43535193 |
| 497743 | Jul 27, 2000 | Jul 27, 2000 | Dreyfus, Louis Natural Gas Corp | Hudspeth 52 #02 | 8,750 | 43535194 |
| 497742 | Jul 27, 2000 | Jul 27, 2000 | Dreyfus, Louis Natural Gas Corp | Hudspeth "H" #2 | 8,600 | 43535196 |
| 497741 | Jul 27, 2000 | Jul 27, 2000 | Dreyfus, Louis Natural Gas Corp | Hudspeth "I" #3 | 8,600 | 43535195 |
| 497734 | Jul 27, 2000 | Jul 27, 2000 | KCS Medallion Resources, Inc. | Sawyer 145 #15 | 7,000 | 43535192 |
| 497676 | Jul 26, 2000 | Jul 26, 2000 | Burlington Resources Oil&gas Co. | Meckel #44 | 6,000 | 43535191 |
| 497675 | Jul 26, 2000 | Jul 26, 2000 | Burlington Resources Oil&gas Co. | Meckel #45 | 6,000 | 43535190 |
| 497668 | Jul 26, 2000 | Jul 26, 2000 | KCS Medallion Resources, Inc. | Miers A #1518 | 6,000 | 43535188 |
| 497606 | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Deberry-Berger Unit #14 | 6,500 | 43535186 |
| 497606Amendment | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Deberry-Berger Unit #14 | 6,500 | 43535186 |
| 497604 | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Deberry-Berger Unit #15 | 6,500 | 43535187 |
| 497604Amendment | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources O & G Co LP | Deberry-Berger Unit #15 | 6,500 | 43535187 |
| 497496 | Jul 21, 2000 | Jul 21, 2000 | KCS Medallion Resources, Inc. | Miers A #1 | 6,200 | 43500255 |
| 497460 | Jul 21, 2000 | Jul 21, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer, Edwin S. Jr, "M" #5 | 8,300 | 43535185 |
| 497460Amendment | Jul 21, 2000 | Jul 21, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer, Edwin S. Jr, "M" #5 | 8,300 | 43535185 |
| 497459 | Jul 21, 2000 | Jul 21, 2000 | Burlington Resources Oil&gas Co. | Deberry "A" #22 | 6,600 | 43535182 |
| 497457 | Jul 21, 2000 | Jul 21, 2000 | Burlington Resources Oil&gas Co. | Deberry "A" #57 | 6,660 | 43535184 |
| 497434 | Jul 20, 2000 | Jul 20, 2000 | KCS Medallion Resources, Inc. | McMillan, W. B. #4 | 5,700 | 43535180 |
| 497458 | Jul 19, 2000 | Jul 19, 2000 | Burlington Resources Oil&gas Co. | Deberry "A" #56 | 6,700 | 43535183 |
| 497337 | Jul 18, 2000 | Jul 18, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer, Edwin S. Jr. "C" #15 | 8,250 | 43535179 |
| 497147 | Jul 12, 2000 | Jul 12, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer, Minnie H. "C" #4 | 8,200 | 43535178 |
| 497087 | Jul 11, 2000 | Jul 11, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 95 #7 | 6,300 | 43535176 |
| 497086 | Jul 11, 2000 | Jul 11, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 96 #10 | 6,300 | 43535175 |
| 497085 | Jul 11, 2000 | Jul 11, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer "Eeee" #2 | 8,250 | 43535177 |
| 496997 | Jul 10, 2000 | Jul 10, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer Ranch "TTT" #1592 | 8,350 | 43535174 |
| 496968 | Jul 7, 2000 | Jul 7, 2000 | Dreyfus, Louis Natural Gas Corp | Mayfield 39 #12 | 8,450 | 43535173 |
| 496752 | Jun 30, 2000 | Jun 30, 2000 | Dreyfus, Louis Natural Gas Corp | Pfluger 86 #7 | 5,600 | 43535172 |
| 496752Amendment | Jun 30, 2000 | Jun 30, 2000 | Dominion Oklahoma Texas E&P, Inc | Pfluger 86 #7 | 5,600 | 43535172 |
| 496751 | Jun 30, 2000 | Jun 30, 2000 | Dreyfus, Louis Natural Gas Corp | Pfluger 85 #9 | 5,600 | 43535171 |
| 496638 | Jun 28, 2000 | Jun 28, 2000 | Dreyfus, Louis Natural Gas Corp | Mayfield 39 #9 | 4,424 | 43534613 |
| 496637 | Jun 28, 2000 | Jun 28, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 14 #6 | 5,800 | 43535170 |
| 496520 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Mayfield 34 #6 | 4,080 | 43533518 |
| 496519 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 14 #7 | 5,850 | 43535165 |
| 496518 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 15 #13 | 6,000 | 43535166 |
| 496517 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 23 #5 | 5,700 | 43535168 |
| 496516 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 23 #6 | 5,700 | 43535167 |
| 496515 | Jun 23, 2000 | Jun 23, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 3B #1 | 8,450 | 43535169 |
| 496410 | Jun 21, 2000 | Jun 21, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 99 #16 | 6,400 | 43535164 |
| 496409 | Jun 21, 2000 | Jun 21, 2000 | Dreyfus, Louis Natural Gas Corp | Richardson 4 #8 | 8,400 | 43535163 |
| 496408 | Jun 21, 2000 | Jun 21, 2000 | EOG Resources, Inc. | Granger Bluff #1102 | 9,300 | 43535162 |
| 496375 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer "3" #2 | 8,700 | 43535161 |
| 496374 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | McMillian, W. B. 10 #16 | 5,650 | 43535160 |
| 496373 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 47 #9 | 8,450 | 43535159 |
| 496372 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer, Edwin S. Jr. "D" #809 | 8,250 | 43535154 |
| 496371 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 1028 #2 | 8,300 | 43535155 |
| 496369 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 94 #6 | 6,600 | 43535156 |
| 496368 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 98 #12 | 6,500 | 43535157 |
| 496367 | Jun 20, 2000 | Jun 20, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 111 #12 | 6,600 | 43535158 |
| 496335 | Jun 19, 2000 | Jun 19, 2000 | Dreyfus, Louis Natural Gas Corp | Shurley 98 #16 | 6,400 | 43535153 |
| 496030 | Jun 9, 2000 | Jun 9, 2000 | Dreyfus, Louis Natural Gas Corp | Mayfield 46 #13 | 8,400 | 43535151 |
| 495847 | Jun 5, 2000 | Jun 5, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 21 #4 | 6,500 | 43533589 |
| 495585 | May 26, 2000 | May 26, 2000 | Dreyfus, Louis Natural Gas Corp | Randee Fawcett Trust "B" #3 | 7,600 | 43530506 |
| 495529 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer Edwin S. Jr. "M" #4 | 8,300 | 43535150 |
| 495528 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | David 109 #13 | 5,650 | 43535149 |
| 495527 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | David 109 #14 | 5,650 | 43535148 |
| 495526 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | David 109 #15 | 5,650 | 43535147 |
| 495525 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | David 109 #16 | 5,650 | 43535146 |
| 495524 | May 25, 2000 | May 25, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer Edwin S. Jr. "L" #3 | 8,050 | 43535145 |
| 495449 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Galbreath 79 #7 | 6,200 | 43535143 |
| 495448 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Galbreath 79 #5 | 6,200 | 43535142 |
| 495447 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Galbreath 78 #8 | 6,200 | 43535141 |
| 495445 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Galbreath 91 #7 | 6,300 | 43535144 |
| 495444 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer Ranch JJJ #1403 | 8,250 | 43535140 |
| 495442 | May 24, 2000 | May 24, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer Ranch GG #3102 | 8,200 | 43535139 |
| 495396 | May 23, 2000 | May 23, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer, Edwin S. Jr "FF" #2 | 8,300 | 43535138 |
| 495369 | May 22, 2000 | May 22, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 47 #8 | 8,450 | 43535136 |
| 495368 | May 22, 2000 | May 22, 2000 | Dreyfus, Louis Natural Gas Corp | Morris Bros. Ranch G #9902 | 9,400 | 43534091 |
| 495367 | May 22, 2000 | May 22, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer, Edwin S Jr "CC" #2 | 8,350 | 43535137 |
| 495022 | May 17, 2000 | May 17, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 38 #5 | 8,150 | 43535135 |
| 495024 | May 12, 2000 | May 12, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 36 #12 | 8,250 | 43535133 |
| 494976 | May 11, 2000 | May 11, 2000 | Burlington Resources Oil&gas Co. | Deberry "A" #55 | 6,750 | 43535134 |
| 494913 | May 10, 2000 | May 10, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 36 #1 | 7,800 | 43530503 |
| 494879 | May 9, 2000 | May 9, 2000 | Dreyfus, Louis Natural Gas Corp | Hill-Mayer, Edwin S. Jr "2" #3 | 8,059 | 43534556 |
| 494878 | May 9, 2000 | May 9, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer Ranch "JJJ" #1402 | 8,250 | 43534680 |
| 494877 | May 9, 2000 | May 9, 2000 | Dreyfus, Louis Natural Gas Corp | Fields 51 #4 | 6,000 | 43532042 |
| 494647 | May 2, 2000 | May 2, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 18 #6 | 8,400 | 43535131 |
| 494520 | Apr 27, 2000 | Apr 27, 2000 | Dreyfus, Louis Natural Gas Corp | Mayer 17 #4 | 8,250 | 43535130 |