| 507169Amendment | Mar 29, 2001 | Mar 29, 2001 | Neumin Production Company | Victoria | Smith #2 | 5,900 | 46933576 |
| 503068 | Jan 12, 2001 | Jan 12, 2001 | Neumin Production Company | Goliad | New, J. K. Estate #1 | 3,000 | 17532998 |
| 501650 | Nov 20, 2000 | Nov 20, 2000 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #11 | 12,000 | 05731370 |
| 501869 | Nov 10, 2000 | Nov 10, 2000 | Neumin Production Company | Refugio | Williams #1 | 6,500 | 39132391 |
| 501869Amendment | Nov 10, 2000 | Nov 10, 2000 | Neumin Production Company | Refugio | Williams #1 | 6,500 | 39132391 |
| 501513 | Nov 2, 2000 | Nov 2, 2000 | Neumin Production Company | Jackson | Bussell #1 | 9,500 | 23933100 |
| 500963 | Oct 18, 2000 | Oct 18, 2000 | Neumin Production Company | Refugio | Jacks et Al #3 | 7,000 | 39132387 |
| 496096 | Jun 12, 2000 | Jun 12, 2000 | Neumin Production Company | Refugio | West #1 | 6,000 | 39132364 |
| 496095 | Jun 12, 2000 | Jun 12, 2000 | Neumin Production Company | Refugio | Jacks et Al #2 | 7,000 | 39132363 |
| 492257 | Feb 18, 2000 | Feb 18, 2000 | Neumin Production Company | Calhoun | Melbourn, Helen Est. #1801 | 9,500 | 05731608 |
| 491007 | Jan 19, 2000 | Jan 19, 2000 | Neumin Production Company | Matagorda | Frankson Etal #1 | 9,000 | 32131804 |
| 490962 | Jan 10, 2000 | Jan 10, 2000 | Neumin Production Company | Calhoun | State Tract 228 #1 | 10,700 | 05731605 |
| 489500 | Nov 15, 1999 | Nov 15, 1999 | Neumin Production Company | Refugio | Jacks et Al #1 | 7,500 | 39132317 |
| 489485 | Nov 12, 1999 | Nov 12, 1999 | Neumin Production Company | Colorado | Stovall #4 | 5,000 | 08932185 |
| 487966 | Sep 30, 1999 | Sep 30, 1999 | Neumin Production Company | Calhoun | State Tract 26 #3 | 10,500 | 05701311 |
| 486145 | Aug 6, 1999 | Aug 6, 1999 | Neumin Production Company | Calhoun | State Tract 26 #5 | 9,908 | 05731242 |
| 485313 | Jun 18, 1999 | Jun 18, 1999 | Neumin Production Company | Brazoria | Dow #E 5 | 6,000 | 03932674 |
| 483915 | Apr 27, 1999 | Apr 27, 1999 | Neumin Production Company | Colorado | Brown #2 | 4,000 | 08932067 |
| 481845 | Dec 30, 1998 | Dec 30, 1998 | Neumin Production Company | Colorado | Stovall #3 | 5,000 | 08932111 |
| 481699 | Dec 22, 1998 | Dec 22, 1998 | Neumin Production Company | Brazoria | Dow #D 4 | 7,500 | 03932664 |
| 479662 | Sep 23, 1998 | Sep 23, 1998 | Neumin Production Company | Brazoria | Dow #B 2 | 8,000 | 03932661 |
| 479633 | Sep 22, 1998 | Sep 22, 1998 | Neumin Production Company | Brazoria | Dow #C3 | 8,000 | 03932660 |
| 475993 | May 5, 1998 | May 5, 1998 | Neumin Production Company | Brazoria | Beets - Dow #1 | 8,500 | 03932649 |
| 475993Amendment | May 5, 1998 | May 5, 1998 | Neumin Production Company | Brazoria | Beets - Dow #1H | 8,500 | 03932649 |
| 475993Amendment | May 5, 1998 | May 5, 1998 | Neumin Production Company | Brazoria | Beets - Dow #1 | 8,500 | 03932649 |
| 473414Amendment | Feb 17, 1998 | Feb 17, 1998 | Neumin Production Company | Refugio | Welder -G- #48 | 6,600 | 39132225 |
| 468844 | Oct 15, 1997 | Oct 15, 1997 | Neumin Production Company | Colorado | Brown #2 | 11,750 | 08932067 |
| 468844Amendment | Oct 15, 1997 | Oct 15, 1997 | Neumin Production Company | Colorado | Brown #2 | 11,750 | 08932067 |
| 468091 | Oct 15, 1997 | Oct 15, 1997 | Neumin Production Company | Orange | State Lease 15155 #1 | 11,500 | 36130749 |
| 468048 | Sep 25, 1997 | Sep 25, 1997 | Neumin Production Company | Calhoun | State Tract 38 #6 | 13,500 | 05731523 |
| 462253 | May 9, 1997 | May 9, 1997 | Neumin Production Company | Calhoun | State Tract 86 #1 | 10,750 | 05731559 |
| 462253Amendment | May 9, 1997 | May 9, 1997 | Neumin Production Company | Calhoun | State Tract 86 #1 | 10,750 | 05731559 |
| 457462 | Jan 16, 1997 | Jan 16, 1997 | Neumin Production Company | Jefferson | Pontious #2 | 10,500 | 24532144 |
| 447101 | Apr 19, 1996 | Apr 19, 1996 | Neumin Production Company | Calhoun | State Tract 90 #6 | 10,500 | 05731538 |
| 447101Amendment | Apr 19, 1996 | Apr 19, 1996 | Neumin Production Company | Calhoun | State Tract 90 #6 | 10,750 | 05731538 |
| 443745 | Jan 17, 1996 | Jan 17, 1996 | Neumin Production Company | Colorado | Coyle-Concord #1 | 4,600 | 08931958 |
| 439593 | Sep 18, 1995 | Sep 18, 1995 | Neumin Production Company | Calhoun | State Tract 90 #5 | 9,650 | 05731375 |
| 438506 | Aug 9, 1995 | Aug 9, 1995 | Neumin Production Company | Jackson | Drushel Estate #1 | 5,100 | 23932863 |
| 434182 | Apr 4, 1995 | Apr 4, 1995 | Neumin Production Company | Calhoun | State Tract 26 #6 | 9,910 | 05731361 |
| 434183 | Mar 29, 1995 | Mar 29, 1995 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #13 | 10,285 | 05731419 |
| 433677 | Mar 15, 1995 | Mar 15, 1995 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #11 | 11,909 | 05731370 |
| 433470 | Mar 8, 1995 | Mar 8, 1995 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #4 | 10,004 | 05701394 |
| 433065 | Feb 21, 1995 | Feb 21, 1995 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #14 | 10,600 | 05731420 |
| 424803 | Jun 15, 1994 | Jun 15, 1994 | Neumin Production Company | Calhoun | State Tract 177 #5 D | 5,800 | 05731330 |
| 422510 | Apr 1, 1994 | Apr 1, 1994 | Neumin Production Company | Calhoun | Yuma-Helen Melbourn #1 | 14,500 | 05731528 |
| 422510Amendment | Apr 1, 1994 | Apr 1, 1994 | Neumin Production Company | Calhoun | Yuma-Helen Melbourn #1 | 14,500 | 05731528 |
| 413153 | Jun 28, 1993 | Jun 28, 1993 | Neumin Production Company | Calhoun | State Tract 38 #6 | 13,500 | 05731523 |
| 410826 | Apr 21, 1993 | Apr 21, 1993 | Neumin Production Company | Calhoun | State Tract 26 #6 | 9,910 | 05731361 |
| 391741 | Sep 17, 1991 | Sep 17, 1991 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #11 | 12,103 | 05731370 |
| 389902 | Jul 16, 1991 | Jul 16, 1991 | Neumin Production Company | Calhoun | State Tract 38 #4 | 12,370 | 05731335 |
| 389902Amendment | Jul 16, 1991 | Jul 16, 1991 | Neumin Production Company | Calhoun | State Tract 38 #4 | 11,167 | 05731335 |
| 388108 | May 28, 1991 | May 28, 1991 | Neumin Production Company | Jackson | State Tract 260 Unit 1 #2 | 9,670 | 23931730 |
| 387932 | May 24, 1991 | May 24, 1991 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #12 | 13,100 | 05731415 |
| 387345 | May 3, 1991 | May 3, 1991 | Neumin Production Company | Calhoun | State Tract 38 #3 | 13,450 | 05731274 |
| 387045 | Apr 24, 1991 | Apr 24, 1991 | Neumin Production Company | Calhoun | State Tract 90 #6 | 9,800 | 05731506 |
| 381042 | Nov 19, 1990 | Nov 19, 1990 | Neumin Production Company | Jackson | Johnson, A. T. #1 | 6,200 | 23932572 |
| 377440 | Sep 4, 1990 | Sep 4, 1990 | Neumin Production Company | Calhoun | State Tract 240 #1 | 9,504 | 05700746 |
| 375710 | Jul 25, 1990 | Jul 25, 1990 | Neumin Production Company | Jackson | Porche Estate #1 | 10,000 | 23932473 |
| 374602 | Jun 20, 1990 | Jun 20, 1990 | Neumin Production Company | Calhoun | State Tract 37 #3 | 14,000 | 05731495 |
| 374602Amendment | Jun 20, 1990 | Jun 20, 1990 | Neumin Production Company | Calhoun | State Tract 37 #3 | 14,000 | 05731495 |
| 374022 | Jun 5, 1990 | Jun 5, 1990 | Neumin Production Company | Jackson | Scott, A. J. et Al #1 | 6,200 | 23932544 |
| 373651 | May 23, 1990 | May 23, 1990 | Neumin Production Company | Calhoun | Degoyler #1 | 6,000 | 05731494 |
| 370428 | Mar 5, 1990 | Mar 5, 1990 | Neumin Production Company | Goliad | Thigpen, Louis W. #1 | 6,000 | 17532495 |
| 369972 | Feb 13, 1990 | Feb 13, 1990 | Neumin Production Company | Jackson | Ochterbeck, Olga #1 | 6,200 | 23932530 |
| 368633 | Jan 16, 1990 | Jan 16, 1990 | Neumin Production Company | Calhoun | Melbourn, W. C. #C 2 | 8,490 | 05701370 |
| 365994Amendment | Nov 3, 1989 | Nov 3, 1989 | Neumin Production Company | Goliad | Swickheimer #1 | 6,000 | 17532456 |
| 362934 | Aug 21, 1989 | Aug 21, 1989 | Neumin Production Company | Calhoun | State Tract 85 #3 | 9,800 | 05731483 |
| 362422 | Aug 9, 1989 | Aug 9, 1989 | Neumin Production Company | Calhoun | State Tract 177 #4D | 5,850 | 05731219 |
| 354086 | Dec 12, 1988 | Dec 12, 1988 | Neumin Production Company | Calhoun | State Tract 81 #2 | 8,800 | 05731466 |
| 354086Amendment | Dec 12, 1988 | Dec 12, 1988 | Neumin Production Company | Calhoun | State Tract 81 #2 | 9,600 | 05731466 |
| 354069 | Dec 9, 1988 | Dec 9, 1988 | Neumin Production Company | Calhoun | Hardie, Elizabeth K. #1 | 8,800 | 05731467 |
| 354069Amendment | Dec 9, 1988 | Dec 9, 1988 | Neumin Production Company | Calhoun | Hardie, Elizabeth K. #1 | 8,490 | 05731467 |
| 352617 | Oct 25, 1988 | Oct 25, 1988 | Neumin Production Company | Calhoun | State Tract 81 #1 | 8,700 | 05731463 |
| 352617Amendment | Oct 25, 1988 | Oct 25, 1988 | Neumin Production Company | Calhoun | State Tract 81 #1 | 8,724 | 05731463 |
| 352616 | Oct 25, 1988 | Oct 25, 1988 | Neumin Production Company | Calhoun | State Tract 80 #1 | 8,700 | 05731462 |
| 345849 | May 2, 1988 | May 2, 1988 | Neumin Production Company | Calhoun | State Tract 39 #4 | 12,639 | 05731347 |
| 345786 | May 2, 1988 | May 2, 1988 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #13 | 13,024 | 05731419 |
| 344230 | Mar 25, 1988 | Mar 25, 1988 | Neumin Production Company | Calhoun | State Tract 184 #3 | 5,859 | 05731371 |
| 343820 | Mar 15, 1988 | Mar 15, 1988 | Neumin Production Company | Lavaca | Smith, Edna et Al #1 | 6,014 | 28531385 |
| 342814 | Feb 22, 1988 | Feb 22, 1988 | Neumin Production Company | Calhoun | State Tract 27 #3 | 12,232 | 05731356 |
| 342812 | Feb 22, 1988 | Feb 22, 1988 | Neumin Production Company | Calhoun | State Tract 26 #7 | 11,403 | 05731416 |
| 341321 | Jan 14, 1988 | Jan 14, 1988 | Neumin Production Company | Live Oak | Ingersoll, M. E. Gray #2 | 7,816 | 29731879 |
| 341321Amendment | Jan 14, 1988 | Jan 14, 1988 | Neumin Production Company | Live Oak | M. E. Gray Ingersoll Unit #2 | 7,816 | 29731879 |
| 341214 | Jan 13, 1988 | Jan 13, 1988 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #14 | 12,552 | 05731420 |
| 338757 | Nov 16, 1987 | Nov 16, 1987 | Neumin Production Company | Calhoun | State Tract 38 #5 | 13,333 | 05731393 |
| 338090 | Oct 29, 1987 | Oct 29, 1987 | Neumin Production Company | Calhoun | State Tract 184 #2D | 5,856 | 05731357 |
| 335541 | Sep 4, 1987 | Sep 4, 1987 | Neumin Production Company | Calhoun | State Tract 42 Unit #1 | 9,800 | 05731438 |
| 335417 | Sep 3, 1987 | Sep 3, 1987 | Neumin Production Company | Calhoun | State Tract 90 #5 | 9,650 | 05731375 |
| 334122 | Aug 10, 1987 | Aug 10, 1987 | Neumin Production Company | De Witt | Kolodziejczyk Unit #1 | 13,100 | 12331042 |
| 334122Amendment | Aug 10, 1987 | Aug 10, 1987 | Neumin Production Company | De Witt | Kolodziejczyk Unit #1 | 13,100 | 12331042 |
| 333525 | Jul 29, 1987 | Jul 29, 1987 | Neumin Production Company | Calhoun | State Tract 223 #1 | 6,000 | 05731434 |
| 332694 | Jul 13, 1987 | Jul 13, 1987 | Neumin Production Company | Calhoun | State Tract 177 #3D | 6,400 | 05731179 |
| 332390 | Jul 3, 1987 | Jul 3, 1987 | Neumin Production Company | Calhoun | State Tract 197 #1F | 5,800 | 05731331 |
| 330057 | May 19, 1987 | May 19, 1987 | Neumin Production Company | De Witt | Kolodziejczyk Unit #1 | 13,100 | 12331042 |
| 330116 | May 13, 1987 | May 13, 1987 | Neumin Production Company | Calhoun | State Tract 36 #1 | 14,000 | 05731428 |
| 330116Amendment | May 13, 1987 | May 13, 1987 | Neumin Production Company | Calhoun | State Tract 36 #1 | 14,000 | 05731428 |
| 329274 | Apr 24, 1987 | Apr 24, 1987 | Neumin Production Company | Calhoun | Aluminum Co. of America (Fee) #13 | 13,024 | 05731419 |
| 329005 | Apr 20, 1987 | Apr 20, 1987 | Neumin Production Company | Calhoun | Melbourn, W. C. #C 3 | 10,006 | 05701256 |
| 324262 | Dec 11, 1986 | Dec 11, 1986 | Neumin Production Company | Wharton | Stith, Roberta #1 | 8,150 | 48103351 |
| 323012 | Nov 14, 1986 | Nov 14, 1986 | Neumin Production Company | Calhoun | Aluminum Company of America(fee) #14 | 14,000 | 05731420 |