| 441469 | Nov 3, 1995 | Nov 3, 1995 | Mineral Development, Inc. | Hardeman | Mdi-Mitchell #2 | 4,700 | 19731362 |
| 438387 | Jul 31, 1995 | Jul 31, 1995 | Mineral Development, Inc. | Childress | Fowler #2 | 8,500 | 07530146 |
| 437560 | Jul 5, 1995 | Jul 5, 1995 | Mineral Development, Inc. | Fayette | Farmer #1S | 7,400 | 14930447 |
| 433493 | Mar 16, 1995 | Mar 16, 1995 | Mineral Development, Inc. | Hardeman | Turner 437 #2 | 8,100 | 19731324 |
| 433492 | Mar 3, 1995 | Mar 3, 1995 | Mineral Development, Inc. | Childress | Perkins #4 | 4,700 | 07530145 |
| 431101 | Dec 22, 1994 | Dec 22, 1994 | Mineral Development, Inc. | Dawson | Williamson #2A | 9,300 | 11532744 |
| 429437 | Oct 27, 1994 | Oct 27, 1994 | Mineral Development, Inc. | Hardeman | Mdi Brown #1109 | 8,500 | 19731401 |
| 426128 | Jul 21, 1994 | Jul 21, 1994 | Mineral Development, Inc. | Wilbarger | Abbott #1 | 8,400 | 48732302 |
| 417105 | Oct 15, 1993 | Oct 15, 1993 | Mineral Development, Inc. | Hardeman | Coburn #1022 | 8,300 | 19731262 |
| 416302 | Oct 11, 1993 | Oct 11, 1993 | Mineral Development, Inc. | Hardeman | Brown #186 | 10,000 | 19731260 |
| 416301 | Oct 11, 1993 | Oct 11, 1993 | Mineral Development, Inc. | Hardeman | Brown #163 | 10,000 | 19731259 |
| 416113 | Sep 24, 1993 | Sep 24, 1993 | Mineral Development, Inc. | Hardeman | Bowes #104 | 10,000 | 19731256 |
| 415596 | Sep 9, 1993 | Sep 9, 1993 | Mineral Development, Inc. | Hardeman | Vantine #107 | 10,000 | 19731251 |
| 411582 | May 25, 1993 | May 25, 1993 | Mineral Development, Inc. | Dawson | Williamson #1 | 9,223 | 11532744 |
| 411582Amendment | May 25, 1993 | May 25, 1993 | Mineral Development, Inc. | Dawson | Williamson #2 | 7,580 | 11532744 |
| 411362 | May 4, 1993 | May 4, 1993 | Mineral Development, Inc. | Hartley | Lathem 111 #1 | 7,000 | 20530242 |
| 410677 | Apr 27, 1993 | Apr 27, 1993 | Mineral Development, Inc. | Wilbarger | Boone #1 | 8,309 | 48731795 |
| 407519 | Dec 22, 1992 | Dec 22, 1992 | Mineral Development, Inc. | Dawson | Williamson #2 | 9,300 | 11532744 |
| 407519Amendment | Dec 22, 1992 | Dec 22, 1992 | Mineral Development, Inc. | Dawson | Williamson #2 | 9,821 | 11532744 |
| 401038 | Jul 22, 1992 | Jul 22, 1992 | Mineral Development, Inc. | Foard | Pittillo #2 | 5,400 | 15530551 |
| 399847 | Jun 8, 1992 | Jun 8, 1992 | Mineral Development, Inc. | Hardeman | Turner #2 | 8,000 | 19731213 |
| 399847Amendment | Jun 8, 1992 | Jun 8, 1992 | Mineral Development, Inc. | Hardeman | Turner #2 | 8,000 | 19731213 |
| 399741 | Jun 2, 1992 | Jun 2, 1992 | Mineral Development, Inc. | Wilbarger | Boone #3 | 8,300 | 48732241 |
| 395804 | Jan 15, 1992 | Jan 15, 1992 | Mineral Development, Inc. | Wilbarger | Rapp-Boone "A" #1 | 8,400 | 48732233 |
| 386522Amendment | Apr 19, 1991 | Apr 19, 1991 | Mineral Development, Inc. | Yoakum | Cox Estate #1 | 6,000 | 50133698 |
| 375753 | Jul 23, 1990 | Jul 23, 1990 | Mineral Development, Inc. | Anderson | McGee, H.W. IV, et Al #1A | 6,100 | 00131990 |
| 332150 | Jul 3, 1987 | Jul 3, 1987 | Mineral Development, Inc. | Dawson | Jeter #1 | 11,000 | 11532436 |
| 332150Amendment | Jul 3, 1987 | Jul 3, 1987 | Mineral Development, Inc. | Dawson | Jeter #1 | 10,500 | 11532436 |
| 326943 | Mar 6, 1987 | Mar 6, 1987 | Mineral Development, Inc. | Dawson | Brennand Jr. Trust #1 | 8,446 | 11532329 |
| 327202 | Mar 3, 1987 | Mar 3, 1987 | Mineral Development, Inc. | Garza | Kirkpatrick #1 | 8,244 | 16932270 |
| 325022 | Jan 8, 1987 | Jan 8, 1987 | Mineral Development, Inc. | Ward | Sealy, G. Estate #1 | 6,500 | 47533773 |
| 304840 | Aug 1, 1986 | Aug 1, 1986 | Mineral Development, Inc. | Tom Green | Slack #5 | 4,000 | 45131739 |
| 304829 | Aug 1, 1986 | Aug 1, 1986 | Mineral Development, Inc. | Tom Green | Slack #6 | 4,000 | 45131738 |
| 304525 | Jul 24, 1986 | Jul 24, 1986 | Mineral Development, Inc. | Tom Green | Slack #4 | 4,000 | 45131736 |
| 303352 | Jun 18, 1986 | Jun 18, 1986 | Mineral Development, Inc. | Tom Green | Slack #3 | 6,200 | 45131728 |
| 303210 | Jun 13, 1986 | Jun 13, 1986 | Mineral Development, Inc. | Tom Green | Slack #2 | 6,200 | 45131727 |
| 302147 | May 14, 1986 | May 14, 1986 | Mineral Development, Inc. | Dawson | Dugger "A" #1 | 11,000 | 11532379 |
| 302148 | May 14, 1986 | May 14, 1986 | Mineral Development, Inc. | Dawson | Cline Farms #1 | 11,000 | 11532380 |
| 299707 | Mar 17, 1986 | Mar 17, 1986 | Mineral Development, Inc. | Tom Green | Slack #1 | 6,200 | 45131700 |
| 286597 | Oct 3, 1985 | Oct 3, 1985 | Mineral Development, Inc. | Pecos | Mag "F" #45 | 2,200 | 37135622 |
| 286594 | Oct 3, 1985 | Oct 3, 1985 | Mineral Development, Inc. | Pecos | Mag "F" #43 | 2,200 | 37135621 |
| 286593 | Oct 3, 1985 | Oct 3, 1985 | Mineral Development, Inc. | Pecos | Mag "F" #44 | 2,200 | 37135620 |
| 274959 | May 13, 1985 | May 13, 1985 | Mineral Development, Inc. | Pecos | Potts "C" #606 | 2,200 | 37135525 |
| 274962 | May 13, 1985 | May 13, 1985 | Mineral Development, Inc. | Pecos | Potts "B" #605 | 2,200 | 37135527 |
| 274958 | May 13, 1985 | May 13, 1985 | Mineral Development, Inc. | Pecos | Potts "B" #604 | 2,200 | 37135524 |
| 274961 | May 13, 1985 | May 13, 1985 | Mineral Development, Inc. | Pecos | Potts "B" #603 | 2,200 | 37135526 |
| 273245Amendment | Apr 23, 1985 | Apr 23, 1985 | Mineral Development, Inc. | Coleman | Hamon, Rodney #12 | 3,041 | 08334440 |
| 261615 | Dec 18, 1984 | Dec 18, 1984 | Mineral Development, Inc. | Cooke | Cox, Abe #1 | 4,000 | 09732687 |
| 261169 | Dec 13, 1984 | Dec 13, 1984 | Mineral Development, Inc. | Pecos | Mag "C" #39 | 2,200 | 37135237 |
| 261113 | Dec 13, 1984 | Dec 13, 1984 | Mineral Development, Inc. | Pecos | Mag "C" #42 | 2,200 | 37135235 |
| 261115 | Dec 13, 1984 | Dec 13, 1984 | Mineral Development, Inc. | Pecos | Mag "C" #41 | 2,200 | 37135236 |
| 258059 | Nov 16, 1984 | Nov 16, 1984 | Mineral Development, Inc. | Pecos | Mag "C" #40 | 2,200 | 37135200 |
| 256831 | Nov 5, 1984 | Nov 5, 1984 | Mineral Development, Inc. | Pecos | Scharff "C" #23 | 2,200 | 37135187 |
| 256832 | Nov 5, 1984 | Nov 5, 1984 | Mineral Development, Inc. | Pecos | Scharff "C" #24 | 2,200 | 37135188 |
| 256834 | Nov 5, 1984 | Nov 5, 1984 | Mineral Development, Inc. | Pecos | Scharff "C" #25 | 2,200 | 37135189 |
| 254976 | Oct 18, 1984 | Oct 18, 1984 | Mineral Development, Inc. | Pecos | Scharff "C" #22 | 2,200 | 37135172 |
| 245925 | Jul 23, 1984 | Jul 23, 1984 | Mineral Development, Inc. | Winkler | Robinson #1 | 3,600 | 49531800 |
| 237004 | Apr 27, 1984 | Apr 27, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #35 | 2,200 | 37134920 |
| 237003 | Apr 27, 1984 | Apr 27, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #36 | 2,200 | 37134919 |
| 236992 | Apr 27, 1984 | Apr 27, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #27 | 2,200 | 37134918 |
| 235028 | Apr 9, 1984 | Apr 9, 1984 | Mineral Development, Inc. | Crockett | Read #1 | 9,900 | 10534793 |
| 230313 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #38 | 2,200 | 37134780 |
| 230267 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #34 | 2,200 | 37134774 |
| 230269 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #33 | 2,200 | 37134776 |
| 230271 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #32 | 2,200 | 37134777 |
| 230265 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #31 | 2,200 | 37134772 |
| 230266 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #30 | 2,200 | 37134773 |
| 230268 | Feb 23, 1984 | Feb 23, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #29 | 2,200 | 37134775 |
| 230272 | Feb 21, 1984 | Feb 21, 1984 | Mineral Development, Inc. | Tom Green | Sawyer #7 | 1,400 | 45131390 |
| 229440 | Feb 14, 1984 | Feb 14, 1984 | Mineral Development, Inc. | Tom Green | Guinn #3 | 1,400 | 45131384 |
| 228874 | Feb 9, 1984 | Feb 9, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #37 | 2,200 | 37134736 |
| 227495 | Jan 25, 1984 | Jan 25, 1984 | Mineral Development, Inc. | Pecos | Mag "N" #28 | 2,200 | 37134689 |
| 225406 | Dec 30, 1983 | Dec 30, 1983 | Mineral Development, Inc. | Pecos | Scharff "B" #19 | 2,200 | 37134635 |
| 225410 | Dec 30, 1983 | Dec 30, 1983 | Mineral Development, Inc. | Pecos | Scharff "B" #21 | 2,200 | 37134636 |
| 223553 | Dec 13, 1983 | Dec 13, 1983 | Mineral Development, Inc. | Pecos | Scharff "B" #16 | 2,200 | 37134624 |
| 219874 | Nov 3, 1983 | Nov 3, 1983 | Mineral Development, Inc. | Tom Green | Sawyer #6 | 1,200 | 45131338 |
| 219875 | Nov 3, 1983 | Nov 3, 1983 | Mineral Development, Inc. | Tom Green | Guinn #2 | 1,400 | 45131339 |
| 203321 | Jul 28, 1983 | Jul 28, 1983 | Mineral Development, Inc. | Tom Green | Guinn #1 | 1,300 | 45131281 |
| 196016 | May 23, 1983 | May 23, 1983 | Mineral Development, Inc. | Pecos | Scharff #17 | 2,200 | 37134386 |
| 195998 | May 23, 1983 | May 23, 1983 | Mineral Development, Inc. | Pecos | Scharff #16 | 2,200 | 37134383 |
| 192932 | Apr 28, 1983 | Apr 28, 1983 | Mineral Development, Inc. | Cherokee | Boyd, Mable #1 | 11,500 | 07330511 |
| 192254 | Apr 21, 1983 | Apr 21, 1983 | Mineral Development, Inc. | Tom Green | Sawyer #4 | 1,400 | 45131208 |
| 192253 | Apr 21, 1983 | Apr 21, 1983 | Mineral Development, Inc. | Tom Green | Sawyer #5 | 1,400 | 45131207 |
| 191472 | Mar 29, 1983 | Mar 29, 1983 | Mineral Development, Inc. | Tom Green | Sawyer #3 | 4,000 | 45131126 |
| 189398 | Mar 23, 1983 | Mar 23, 1983 | Mineral Development, Inc. | Pecos | Scarff #15 | 2,200 | 37134254 |
| 189397 | Mar 23, 1983 | Mar 23, 1983 | Mineral Development, Inc. | Pecos | Scharff #18 | 2,200 | 37134253 |
| 187806 | Mar 4, 1983 | Mar 4, 1983 | Mineral Development, Inc. | Pecos | Scharff #14 | 2,200 | 37134237 |
| 185646 | Feb 9, 1983 | Feb 9, 1983 | Mineral Development, Inc. | Pecos | Scharff #13 | 2,200 | 37134198 |
| 185177 | Feb 4, 1983 | Feb 4, 1983 | Mineral Development, Inc. | Pecos | Scharff #12 | 2,200 | 37134186 |
| 181790 | Dec 30, 1982 | Dec 30, 1982 | Mineral Development, Inc. | Tom Green | Sawyer 'A' #1 | 4,000 | 45131126 |
| 179923 | Dec 13, 1982 | Dec 13, 1982 | Mineral Development, Inc. | Pecos | Scharff #11 | 2,200 | 37134122 |
| 178170 | Nov 23, 1982 | Nov 23, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #25 | 2,200 | 37134071 |
| 178169 | Nov 23, 1982 | Nov 23, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #22 | 2,200 | 37134073 |
| 178168 | Nov 23, 1982 | Nov 23, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #24 | 2,200 | 37134072 |
| 177374 | Nov 16, 1982 | Nov 16, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #21 | 2,200 | 37134075 |
| 178124 | Nov 15, 1982 | Nov 15, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #26 | 2,200 | 37134070 |
| 176206 | Nov 1, 1982 | Nov 1, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #23 | 2,200 | 37134074 |
| 174372 | Oct 14, 1982 | Oct 14, 1982 | Mineral Development, Inc. | Pecos | Magnolia Tripoley #20 | 2,200 | 37134042 |
| 173933 | Oct 8, 1982 | Oct 8, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #19 | 2,200 | 37134038 |
| 168857 | Aug 10, 1982 | Aug 10, 1982 | Mineral Development, Inc. | Pecos | Tripoley, Magnolia #17 | 2,200 | 37133979 |