| 101835 | Dec 11, 1980 | Dec 11, 1980 | Chalmers Operating Co., Inc. | Nolan | Barton "40" #1 | 7,099 | 35331025 |
| 101833 | Dec 11, 1980 | Dec 11, 1980 | Chalmers Operating Co., Inc. | Palo Pinto | Carter, Helen #1 | 4,159 | 36332527 |
| 100090 | Nov 21, 1980 | Nov 21, 1980 | Chalmers Operating Co., Inc. | Nolan | Booth "96" #1 | 6,874 | 35331008 |
| 100034 | Nov 20, 1980 | Nov 20, 1980 | Chalmers Operating Co., Inc. | Nolan | Pierce "10" #1 | 7,100 | 35331007 |
| 99803 | Nov 19, 1980 | Nov 19, 1980 | Chalmers Operating Co., Inc. | Taylor | Bettes, Joe #1 | 4,842 | 44131756 |
| 99270 | Nov 17, 1980 | Nov 17, 1980 | Chalmers Operating Co., Inc. | Taylor | Gowdy, Ernest et UX #1 | 3,200 | 44131754 |
| 99148 | Nov 14, 1980 | Nov 14, 1980 | Chalmers Operating Co., Inc. | Nolan | Brooks "72" #1 | 7,100 | 35331003 |
| 99113 | Nov 14, 1980 | Nov 14, 1980 | Chalmers Operating Co., Inc. | Haskell | Kittley, J. E. #1 | 4,918 | 20730996 |
| 98378 | Nov 7, 1980 | Nov 7, 1980 | Chalmers Operating Co., Inc. | Haskell | Herren "G" #1 | 5,100 | 20730993 |
| 98377 | Nov 7, 1980 | Nov 7, 1980 | Chalmers Operating Co., Inc. | Haskell | Herren, R. W. #1 | 4,834 | 20730992 |
| 98376 | Nov 7, 1980 | Nov 7, 1980 | Chalmers Operating Co., Inc. | Jones | Lyckman, V.L. #1 | 1,991 | 25331671 |
| 98375 | Nov 7, 1980 | Nov 7, 1980 | Chalmers Operating Co., Inc. | Jones | Waltrip, Ollie O. #1 | 2,201 | 25331670 |
| 97897 | Nov 3, 1980 | Nov 3, 1980 | Chalmers Operating Co., Inc. | Shackelford | Hailey, Rob "A" #2 | 2,200 | 41733583 |
| 97896 | Nov 3, 1980 | Nov 3, 1980 | Chalmers Operating Co., Inc. | Shackelford | Hailey, Rob "A" #1 | 2,200 | 41733582 |
| 97893 | Nov 3, 1980 | Nov 3, 1980 | Chalmers Operating Co., Inc. | Shackelford | Hailey, Rob "B" #1 | 2,200 | 41733581 |
| 97891 | Nov 3, 1980 | Nov 3, 1980 | Chalmers Operating Co., Inc. | Shackelford | Hailey, Rob "C" #1 | 2,275 | 41733580 |
| 97706 | Oct 30, 1980 | Oct 30, 1980 | Chalmers Operating Co., Inc. | Taylor | Tiner, S. L. #1 | 4,500 | 44131732 |
| 97705 | Oct 30, 1980 | Oct 30, 1980 | Chalmers Operating Co., Inc. | Taylor | Dillingham et Al #1 | 4,500 | 44131731 |
| 97703 | Oct 30, 1980 | Oct 30, 1980 | Chalmers Operating Co., Inc. | Taylor | Davis "118" #1 | 4,644 | 44131730 |
| 97097 | Oct 27, 1980 | Oct 27, 1980 | Chalmers Operating Co., Inc. | Cottle | Russell, H. G. #1 | 8,097 | 10130292 |
| 96266 | Oct 21, 1980 | Oct 21, 1980 | Chalmers Operating Co., Inc. | Coke | Cargille, Calla Mae #1 | 5,400 | 08130958 |
| 96041 | Oct 14, 1980 | Oct 14, 1980 | Chalmers Operating Co., Inc. | Tom Green | Hrncir, George #1 | 4,811 | 45180287 |
| 93787 | Sep 25, 1980 | Sep 25, 1980 | Chalmers Operating Co., Inc. | Jones | Sudderth, Opal #1 | 4,720 | 25381342 |
| 93786 | Sep 25, 1980 | Sep 25, 1980 | Chalmers Operating Co., Inc. | Jones | Lollar, Frank #1 | 3,026 | 25331631 |
| 93783 | Sep 25, 1980 | Sep 25, 1980 | Chalmers Operating Co., Inc. | Jones | City of Abilene - Campbell #1 | 1,750 | 25331628 |
| 92674 | Sep 15, 1980 | Sep 15, 1980 | Chalmers Operating Co., Inc. | Eastland | Wilson "E" #2 I | 3,500 | 13332536 |
| 92390 | Sep 12, 1980 | Sep 12, 1980 | Chalmers Operating Co., Inc. | Jones | Rainwater, W. T. #1 | 3,377 | 25331612 |
| 92361 | Sep 12, 1980 | Sep 12, 1980 | Chalmers Operating Co., Inc. | Jones | Reves, E. T. Jr. #1 | 2,100 | 25331610 |
| 92323 | Sep 12, 1980 | Sep 12, 1980 | Chalmers Operating Co., Inc. | Taylor | Bettes "143" #1 | 3,000 | 44131685 |
| 91298 | Sep 2, 1980 | Sep 2, 1980 | Chalmers Operating Co., Inc. | Coleman | Backus, Mason #2 | 1,930 | 08332225 |
| 89937 | Aug 15, 1980 | Aug 15, 1980 | Chalmers Operating Co., Inc. | Jones | Swenson Land & Cattle Co. 23 #3 | 2,680 | 25331578 |
| 89936 | Aug 15, 1980 | Aug 15, 1980 | Chalmers Operating Co., Inc. | Jones | Neal, Homer #1 | 3,266 | 25331577 |
| 89825 | Aug 14, 1980 | Aug 14, 1980 | Chalmers Operating Co., Inc. | Jones | Manly "35" #3 | 3,250 | 25331574 |
| 88240 | Jul 30, 1980 | Jul 30, 1980 | Chalmers Operating Co., Inc. | Palo Pinto | Wharton-Holland #1 | 4,250 | 36332425 |
| 86871 | Jul 17, 1980 | Jul 17, 1980 | Chalmers Operating Co., Inc. | Jones | Smith, J. #1 | 2,232 | 25331540 |
| 84036 | Jun 16, 1980 | Jun 16, 1980 | Chalmers Operating Co., Inc. | Taylor | Sneed, Russell #2 | 2,996 | 44131623 |
| 83341 | Jun 10, 1980 | Jun 10, 1980 | Chalmers Operating Co., Inc. | Jones | Scott, Joe H. #1 | 2,227 | 25331504 |
| 84561 | Jun 2, 1980 | Jun 2, 1980 | Chalmers Operating Co., Inc. | Shackelford | Ackers "36" #1 | 3,500 | 41732437 |
| 96004 | May 28, 1980 | May 28, 1980 | Chalmers Operating Co., Inc. | Coke | Wiginton, Thomas et Al #1 | 5,050 | 08130956 |
| 81263 | May 15, 1980 | May 15, 1980 | Chalmers Operating Co., Inc. | Taylor | Drummond, Kenneth #1 | 2,600 | 44131608 |
| 79770 | Apr 30, 1980 | Apr 30, 1980 | Chalmers Operating Co., Inc. | Shackelford | Ackers "38" #3 | 671 | 41733335 |
| 79749 | Apr 30, 1980 | Apr 30, 1980 | Chalmers Operating Co., Inc. | Jones | Strole, D. G. #1 | 2,010 | 25331472 |
| 77762 | Apr 9, 1980 | Apr 9, 1980 | Chalmers Operating Co., Inc. | Taylor | Carpenter, Dorothy #1 | 4,764 | 44131577 |
| 77727 | Apr 9, 1980 | Apr 9, 1980 | Chalmers Operating Co., Inc. | Fisher | Beck "11" #1 | 4,010 | 15131086 |
| 77611 | Apr 9, 1980 | Apr 9, 1980 | Chalmers Operating Co., Inc. | Shackelford | Blanton, Edna Diller #2 | 5,000 | 41733302 |
| 77603 | Apr 8, 1980 | Apr 8, 1980 | Chalmers Operating Co., Inc. | Jones | Ward, Coveta Maydell #1 | 2,574 | 25331451 |
| 77444 | Apr 7, 1980 | Apr 7, 1980 | Chalmers Operating Co., Inc. | Jones | Proctor Estate "A" #1 | 2,250 | 25331447 |
| 77442 | Apr 7, 1980 | Apr 7, 1980 | Chalmers Operating Co., Inc. | Jones | Clayburn, Mack T. #1 | 2,585 | 25331446 |
| 76931 | Apr 1, 1980 | Apr 1, 1980 | Chalmers Operating Co., Inc. | Callahan | Jackson, Elma #5 | 3,365 | 05932633 |
| 76842 | Apr 1, 1980 | Apr 1, 1980 | Chalmers Operating Co., Inc. | Jones | Swenson Land & Cattle Co. "23" #2 | 2,750 | 25331436 |
| 76345 | Mar 27, 1980 | Mar 27, 1980 | Chalmers Operating Co., Inc. | Taylor | Shaffer, M. C. 154 A #1 | 2,950 | 44130750 |
| 76077 | Mar 24, 1980 | Mar 24, 1980 | Chalmers Operating Co., Inc. | Fisher | Hudnell, J. O. #1 | 3,967 | 15131081 |
| 74916 | Mar 11, 1980 | Mar 11, 1980 | Chalmers Operating Co., Inc. | Nolan | Holt, M. H. "107" #1 | 5,880 | 35330884 |
| 73789 | Feb 28, 1980 | Feb 28, 1980 | Chalmers Operating Co., Inc. | Runnels | Cooper, R. G. #1 | 2,900 | 39931541 |
| 73768 | Feb 28, 1980 | Feb 28, 1980 | Chalmers Operating Co., Inc. | Shackelford | Gladden, M. O. #4 | 140 | 41733232 |
| 73668 | Feb 27, 1980 | Feb 27, 1980 | Chalmers Operating Co., Inc. | Jones | City of Abilene #2 | 2,150 | 25331414 |
| 73441 | Feb 25, 1980 | Feb 25, 1980 | Chalmers Operating Co., Inc. | Shackelford | Manly Estate 41 #4 | 1,800 | 41733228 |
| 73004 | Feb 20, 1980 | Feb 20, 1980 | Chalmers Operating Co., Inc. | Shackelford | Hailey, Rob #2 | 1,820 | 41733222 |
| 72937 | Feb 20, 1980 | Feb 20, 1980 | Chalmers Operating Co., Inc. | Shackelford | Gladden, M. O. #3 | 120 | 41733221 |
| 72936 | Feb 20, 1980 | Feb 20, 1980 | Chalmers Operating Co., Inc. | Shackelford | Gladden, M. O. #2 | 120 | 41733220 |
| 72930 | Feb 20, 1980 | Feb 20, 1980 | Chalmers Operating Co., Inc. | Jones | Dorsey Trust #1 | 2,235 | 25331404 |
| 72515 | Feb 12, 1980 | Feb 12, 1980 | Chalmers Operating Co., Inc. | Coke | Arledge, J. W., Jr. 262 #3 | 5,600 | 08130874 |
| 72121 | Feb 8, 1980 | Feb 8, 1980 | Chalmers Operating Co., Inc. | Jones | Pope Bros. 12 #1 | 2,700 | 25331401 |
| 71948 | Feb 6, 1980 | Feb 6, 1980 | Chalmers Operating Co., Inc. | Taylor | Lail #2 | 4,950 | 44131545 |
| 71246 | Jan 30, 1980 | Jan 30, 1980 | Chalmers Operating Co., Inc. | Nolan | Bast, Mary V. "213" #1 | 5,510 | 35330869 |
| 71155 | Jan 29, 1980 | Jan 29, 1980 | Chalmers Operating Co., Inc. | Shackelford | Manly Estate 41 #1 | 1,930 | 41731550 |
| 70835 | Jan 25, 1980 | Jan 25, 1980 | Chalmers Operating Co., Inc. | Jones | Bowman "31" #1 | 2,190 | 25331393 |
| 70813 | Jan 25, 1980 | Jan 25, 1980 | Chalmers Operating Co., Inc. | Callahan | Jackson Estate "21" #1 | 3,450 | 05932528 |
| 70693 | Jan 24, 1980 | Jan 24, 1980 | Chalmers Operating Co., Inc. | Jones | Allison, Donal V. #1 | 2,100 | 25331391 |
| 70692 | Jan 24, 1980 | Jan 24, 1980 | Chalmers Operating Co., Inc. | Taylor | Rhodes, L. G. #1 | 2,790 | 44131543 |
| 68403 | Dec 31, 1979 | Dec 31, 1979 | Chalmers Operating Co., Inc. | Jones | Myatt, D. "24" #1 | 4,816 | 25331374 |
| 68022 | Dec 31, 1979 | Dec 31, 1979 | Chalmers Operating Co., Inc. | Jones | Bartlett Estate "B" #1D | 2,250 | 25331368 |
| 68020 | Dec 31, 1979 | Dec 31, 1979 | Chalmers Operating Co., Inc. | Jones | Bartlett Estate "D" #1 | 2,200 | 25331367 |
| 68018 | Dec 31, 1979 | Dec 31, 1979 | Chalmers Operating Co., Inc. | Jones | Bartlett Estate "A" #1 | 2,200 | 25331366 |
| 66599 | Dec 12, 1979 | Dec 12, 1979 | Chalmers Operating Co., Inc. | Jones | Cox Estate "65" #1 | 1,800 | 25331346 |
| 65382 | Dec 4, 1979 | Dec 4, 1979 | Chalmers Operating Co., Inc. | Jones | Bright, James #1 | 2,550 | 25304708 |
| 65330 | Dec 3, 1979 | Dec 3, 1979 | Chalmers Operating Co., Inc. | Jones | Hedrick, Anna B. 135 #1 | 2,675 | 25331339 |
| 65328 | Dec 3, 1979 | Dec 3, 1979 | Chalmers Operating Co., Inc. | Jones | McBryde, Hoyt #1 | 2,107 | 25331337 |
| 65281 | Dec 3, 1979 | Dec 3, 1979 | Chalmers Operating Co., Inc. | Taylor | Sneed, Russell #1 | 3,051 | 44131508 |
| 65278 | Dec 3, 1979 | Dec 3, 1979 | Chalmers Operating Co., Inc. | Shackelford | Gladden, M. O. #1 | 120 | 41733106 |
| 64500 | Nov 21, 1979 | Nov 21, 1979 | Chalmers Operating Co., Inc. | Runnels | Conner, Ila "85" #1 | 4,460 | 39931465 |
| 61501 | Oct 22, 1979 | Oct 22, 1979 | Chalmers Operating Co., Inc. | Taylor | Swinson, G. E. -38 #1 | 4,800 | 44131477 |
| 60639 | Oct 16, 1979 | Oct 16, 1979 | Chalmers Operating Co., Inc. | Coke | Arledge, J. W. Jr. 262 #2 | 5,600 | 08130828 |
| 58853 | Sep 25, 1979 | Sep 25, 1979 | Chalmers Operating Co., Inc. | Taylor | Sipes, L. Y. -30 #1 | 2,653 | 44131462 |
| 58656 | Sep 21, 1979 | Sep 21, 1979 | Chalmers Operating Co., Inc. | Jones | Bittercreek Ranch #1 | 2,850 | 25331270 |
| 57511 | Sep 10, 1979 | Sep 10, 1979 | Chalmers Operating Co., Inc. | Taylor | Chancey, Paul #1 | 2,750 | 44131450 |
| 57510 | Sep 10, 1979 | Sep 10, 1979 | Chalmers Operating Co., Inc. | Callahan | Jackson, Elma #4 | 3,365 | 05932371 |
| 57301 | Sep 6, 1979 | Sep 6, 1979 | Chalmers Operating Co., Inc. | Taylor | Stephan, Elsie Nolte #1 | 2,620 | 44131447 |
| 57300 | Sep 6, 1979 | Sep 6, 1979 | Chalmers Operating Co., Inc. | Taylor | Philyaw, E. Phil #1 | 3,120 | 44131446 |
| 57299 | Sep 6, 1979 | Sep 6, 1979 | Chalmers Operating Co., Inc. | Taylor | Murphy, W. L. #1 | 3,550 | 44131445 |
| 57290 | Sep 6, 1979 | Sep 6, 1979 | Chalmers Operating Co., Inc. | Jones | Swenson Land & Cattle Co. 23 #1 | 2,750 | 25331262 |
| 57289 | Sep 6, 1979 | Sep 6, 1979 | Chalmers Operating Co., Inc. | Jones | Goode Unit #1 | 3,200 | 25331261 |
| 57149 | Sep 5, 1979 | Sep 5, 1979 | Chalmers Operating Co., Inc. | Menard | Wilkinson LR-30 #1 | 3,650 | 32730342 |
| 56560 | Aug 28, 1979 | Aug 28, 1979 | Chalmers Operating Co., Inc. | Stephens | Mason, Lola Ben #1 | 2,400 | 42932265 |
| 55958 | Aug 20, 1979 | Aug 20, 1979 | Chalmers Operating Co., Inc. | Comanche | Straub, E. J. -B- #1 | 3,000 | 09330656 |
| 55956 | Aug 20, 1979 | Aug 20, 1979 | Chalmers Operating Co., Inc. | Comanche | Kirk "B" #1 | 2,976 | 09330655 |
| 55519 | Aug 14, 1979 | Aug 14, 1979 | Chalmers Operating Co., Inc. | Jones | City of Abilene #1 | 3,600 | 25331247 |
| 55515 | Aug 14, 1979 | Aug 14, 1979 | Chalmers Operating Co., Inc. | Coleman | Kemp #1 | 3,350 | 08331802 |
| 54501 | Aug 3, 1979 | Aug 3, 1979 | Chalmers Operating Co., Inc. | Taylor | Shaffer Estate 154-B #1 | 2,731 | 44131424 |
| 54040 | Jul 31, 1979 | Jul 31, 1979 | Chalmers Operating Co., Inc. | Taylor | Chrane, Leo #13 | 2,000 | 44101576 |