| 362349 | Aug 7, 1989 | Aug 7, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #20 | 1,400 | 04935205 |
| 362184 | Jul 31, 1989 | Jul 31, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #16 | 1,400 | 04935200 |
| 360343 | Jun 13, 1989 | Jun 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #13 | 1,400 | 04935187 |
| 360342 | Jun 13, 1989 | Jun 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #12 | 1,400 | 04935186 |
| 360342Amendment | Jun 13, 1989 | Jun 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #12 | 1,400 | 04935186 |
| 360341 | Jun 13, 1989 | Jun 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #11 | 1,400 | 04935185 |
| 359877 | Jun 5, 1989 | Jun 5, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Lasater #3 | 1,400 | 04935175 |
| 359105 | May 15, 1989 | May 15, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Hickman #1 | 1,400 | 04935165 |
| 359104 | May 15, 1989 | May 15, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Hickman #2 | 1,400 | 04935166 |
| 359103 | May 10, 1989 | May 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Lasater #2 | 1,400 | 04935167 |
| 356728 | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #9 | 1,400 | 04935139 |
| 356728Amendment | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #9 | 1,400 | 04935139 |
| 356727 | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #14 | 1,400 | 04935140 |
| 356727Amendment | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #14 | 1,400 | 04935140 |
| 356726 | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #21 | 1,400 | 04935138 |
| 356726Amendment | Mar 13, 1989 | Mar 13, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #21 | 1,400 | 04935138 |
| 356607 | Mar 3, 1989 | Mar 3, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #8 | 1,400 | 04935135 |
| 356118 | Feb 15, 1989 | Feb 15, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #5 | 1,450 | 04935134 |
| 355050 | Jan 10, 1989 | Jan 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #4 | 1,450 | 04935122 |
| 355050Amendment | Jan 10, 1989 | Jan 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #4 | 1,450 | 04935122 |
| 354984 | Jan 10, 1989 | Jan 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #6 | 1,400 | 04935120 |
| 354984Amendment | Jan 10, 1989 | Jan 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #6 | 1,400 | 04935120 |
| 354982 | Jan 10, 1989 | Jan 10, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #7 | 1,400 | 04935121 |
| 354895 | Jan 6, 1989 | Jan 6, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #20 | 1,400 | 04935118 |
| 354895Amendment | Jan 6, 1989 | Jan 6, 1989 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #20 | 1,400 | 04935118 |
| 354618 | Dec 28, 1988 | Dec 28, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #13 | 1,400 | 04935116 |
| 354618Amendment | Dec 28, 1988 | Dec 28, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #13 | 1,400 | 04935116 |
| 354617 | Dec 28, 1988 | Dec 28, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #10 | 1,400 | 04935115 |
| 354617Amendment | Dec 28, 1988 | Dec 28, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #10 | 1,400 | 04935115 |
| 354178 | Dec 20, 1988 | Dec 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #18 | 1,400 | 04935107 |
| 354346 | Dec 15, 1988 | Dec 15, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #17 | 1,400 | 04935109 |
| 354346Amendment | Dec 15, 1988 | Dec 15, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #17 | 1,400 | 04935109 |
| 352408 | Nov 2, 1988 | Nov 2, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #11 | 1,400 | 04935086 |
| 352408Amendment | Nov 2, 1988 | Nov 2, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #11 | 1,400 | 04935086 |
| 352412 | Oct 19, 1988 | Oct 19, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #15 | 1,400 | 04935089 |
| 352410 | Oct 19, 1988 | Oct 19, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #16 | 1,400 | 04935088 |
| 352409 | Oct 19, 1988 | Oct 19, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #12 | 1,400 | 04935087 |
| 352409Amendment | Oct 19, 1988 | Oct 19, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #12 | 1,400 | 04935087 |
| 351068 | Sep 12, 1988 | Sep 12, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #10 | 1,400 | 04935072 |
| 351068Amendment | Sep 12, 1988 | Sep 12, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #10 | 1,400 | 04935072 |
| 350864 | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #9 | 1,400 | 04935068 |
| 350863 | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #9 | 1,400 | 04935067 |
| 350863Amendment | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #9 | 1,400 | 04935067 |
| 350862 | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #8 | 1,400 | 04935066 |
| 350862Amendment | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #8 | 1,400 | 04935066 |
| 350861 | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #8 | 1,400 | 04935065 |
| 350861Amendment | Sep 7, 1988 | Sep 7, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #8 | 1,400 | 04935065 |
| 348901 | Jul 18, 1988 | Jul 18, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #7 | 1,600 | 04935040 |
| 348901Amendment | Jul 18, 1988 | Jul 18, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #7 | 1,400 | 04935040 |
| 348903 | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #4 | 1,600 | 04935036 |
| 348902 | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #7 | 1,600 | 04935039 |
| 348900 | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #5 | 1,600 | 04935037 |
| 348900Amendment | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #5 | 1,400 | 04935037 |
| 348899 | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #6 | 1,600 | 04935038 |
| 348899Amendment | Jul 14, 1988 | Jul 14, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #6 | 1,400 | 04935038 |
| 345416 | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #6 | 1,600 | 04934994 |
| 345416Amendment | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "EG" #6 | 1,400 | 04934994 |
| 345415 | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #2 | 1,600 | 04934993 |
| 345415Amendment | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #2 | 1,400 | 04934993 |
| 345414 | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #3 | 1,600 | 04934992 |
| 345414Amendment | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "D" #3 | 1,400 | 04934992 |
| 345413 | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #3 | 3,400 | 04934991 |
| 345413Amendment | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #3 | 3,400 | 04934991 |
| 345413Amendment | Apr 20, 1988 | Apr 20, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Steel "F" #3 | 1,400 | 04934991 |
| 341283 | Mar 15, 1988 | Mar 15, 1988 | Frontier Oil & Gas of Texas, Inc | Brown | Low Estate #4 | 3,600 | 04934950 |
| 340273 | Dec 16, 1987 | Dec 16, 1987 | Frontier Oil & Gas of Texas, Inc | Eastland | Merion #2 | 3,600 | 13337220 |
| 338569 | Nov 10, 1987 | Nov 10, 1987 | Frontier Oil & Gas of Texas, Inc | Eastland | Lewallen "A" #2 | 3,600 | 13337196 |
| 336824 | Oct 8, 1987 | Oct 8, 1987 | Frontier Oil & Gas of Texas, Inc | Brown | Steel 'EG' #5 | 3,600 | 04934903 |
| 336822 | Oct 8, 1987 | Oct 8, 1987 | Frontier Oil & Gas of Texas, Inc | Brown | Low Estate #3 | 3,600 | 04934904 |
| 333779 | Aug 17, 1987 | Aug 17, 1987 | Frontier Oil & Gas of Texas, Inc | Brown | Jones, H. G. #3 | 3,600 | 04934859 |
| 333779Amendment | Aug 17, 1987 | Aug 17, 1987 | Frontier Oil & Gas of Texas, Inc | Brown | Jones, H. G. #3 | 3,600 | 04934859 |
| 245261 | Jul 19, 1984 | Jul 19, 1984 | Frontier Oil & Gas of Texas, Inc | Jack | Sunset #1 Vanhooser #1 | 5,000 | 23736204 |