| Lester Snyder Trust 149-003-20856 | Natural Gas Processing Company | Big HornManderson | Shut inOil Well | 6,700 | Jun 2, 1998 | 0 | 0 |
| Manderson Unit 32-19II49-003-21045 | KCS Mountain Resources Inc | Big HornManderson | PluggedDisposal | 6,850 | Feb 23, 1998 | 0 | 0 |
| Ainsworth Unit 21-4P49-003-21029 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,750 | Dec 15, 1997 | 139 | 1,622 |
| Manderson Unit 24-2P49-003-21030 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 6,850 | Dec 15, 1997 | 0 | 0 |
| Manderson Unit 44-3P49-003-21031 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,100 | Dec 15, 1997 | 0 | 0 |
| Manderson Unit 24-20L49-003-21034 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 5,820 | Dec 15, 1997 | 0 | 0 |
| Ainsworth Unit 32-3P49-003-21020 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,000 | Nov 10, 1997 | 212 | 2,000 |
| Manderson Unit 23-33P49-003-21021 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,100 | Nov 10, 1997 | 205 | 2,067 |
| Manderson Unit 44-29P49-003-21017 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,160 | Sep 30, 1997 | 143 | 1,645 |
| Manderson Unit 34-29L49-003-21011 | KCS Mountain Resources Inc | Big HornManderson | PluggedGas Well | 6,280 | Aug 26, 1997 | 0 | 0 |
| Manderson Unit 21-19L49-003-21009 | Natural Gas Processing Company | Big HornManderson | FLGas Well | 6,375 | Aug 12, 1997 | 254 | 16,516 |
| East Manderson Unit 42-15P49-003-21006 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 6,000 | Jul 29, 1997 | 0 | 0 |
| Manderson Unit 14-17P49-003-21007 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 7,600 | Jul 29, 1997 | 0 | 0 |
| Manderson Unit 33-29P49-003-21005 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,600 | Jul 24, 1997 | 136 | 1,610 |
| Manderson Unit 14-20L49-003-21004 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 6,085 | Jul 22, 1997 | 37 | 2,337 |
| Manderson Unit 43-30L49-003-21001 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 6,870 | Jun 18, 1997 | 0 | 0 |
| Manderson Unit 23-13P49-003-21000 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 8,300 | Jun 5, 1997 | 0 | 0 |
| Manderson Unit 14-3649-003-20998 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 6,224 | May 29, 1997 | 13 | 781 |
| Manderson Unit 32-12P49-003-20996 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 8,300 | May 20, 1997 | 0 | 0 |
| Manderson Unit 13-7P(L)49-003-20997 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 8,300 | May 20, 1997 | 166 | 9,933 |
| Manderson Unit 21-13P49-003-20994 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 8,000 | May 12, 1997 | 0 | 0 |
| Manderson Unit 34-19P49-003-20995 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 8,150 | May 12, 1997 | 8 | 276 |
| Manderson Unit 32-20P49-003-20993 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 7,585 | May 2, 1997 | 0 | 0 |
| Manderson Unit 34-28L49-003-20992 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 5,300 | Apr 22, 1997 | 0 | 1,600 |
| Manderson Unit 32-19I49-003-20989 | KCS Mountain Resources Inc | Big HornManderson | PluggedDisposal | 7,866 | Mar 18, 1997 | 0 | 0 |
| Manderson Unit 14-20P49-003-20986 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 8,000 | Feb 25, 1997 | 201 | 2,031 |
| Manderson Unit 12-19P49-003-20984 | Natural Gas Processing Company | Big HornManderson | ActiveDisposal | 7,500 | Feb 12, 1997 | 0 | 0 |
| Manderson Unit 23-29L49-003-20983 | Natural Gas Processing Company | Big HornManderson | Shut inOil Well | 57 | Jan 15, 1997 | 0 | 0 |
| Ainsworth 23-34P49-003-20982 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 6,800 | Jan 9, 1997 | 144 | 1,645 |
| Manderson Unit 23-19PL49-003-20981 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,500 | Jan 3, 1997 | 0 | 725 |
| Manderson Unit 34-2P(L)49-003-20975 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 8,102 | Dec 4, 1996 | 53 | 0 |
| Manderson Unit 23-12PL49-003-20976 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,996 | Dec 4, 1996 | 81 | 0 |
| Manderson Unit 23-29P49-003-20974 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,700 | Nov 25, 1996 | 205 | 2,067 |
| Manderson Unit 13-28PL49-003-20972 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,300 | Oct 30, 1996 | 12 | 0 |
| Manderson Unit 32-18P(L)49-003-20966 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 8,069 | Oct 15, 1996 | 0 | 0 |
| Manderson Unit 41-30P49-003-20967 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 8,153 | Oct 15, 1996 | 136 | 1,610 |
| Manderson Unit 43-13P49-003-20968 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 8,158 | Oct 15, 1996 | 0 | 0 |
| Manderson Unit 12-20L49-003-20961 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 5,410 | Sep 18, 1996 | 0 | 0 |
| Manderson Unit 34-18L49-003-20962 | KCS Mountain Resources Inc | Big HornManderson | PluggedGas Well | 5,200 | Sep 18, 1996 | 0 | 0 |
| Manderson Unit 23-18L49-003-20963 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 5,606 | Sep 18, 1996 | 166 | 10,592 |
| Manderson Unit 41-13L(P)49-003-20964 | Saga Petroleum LLC of Colorado | Big HornManderson | PluggedOil Well | 7,628 | Sep 18, 1996 | 0 | 0 |
| Manderson Unit 41-19LP49-003-20965 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,396 | Sep 18, 1996 | 0 | 0 |
| Manderson Unit 21-29L49-003-20960 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 5,950 | Sep 13, 1996 | 105 | 6,513 |
| Ainsworth Unit 12-2P49-003-20956 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 6,450 | Aug 27, 1996 | 643 | 5,918 |
| AINSWORTH UNIT 12-3P(l)49-003-20957 | Natural Gas Processing Company | Big HornManderson | PluggedGas Well | 7,423 | Aug 27, 1996 | 0 | 0 |
| Manderson Unit 34-28P49-003-20958 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 6,870 | Aug 27, 1996 | 0 | 0 |
| Ainsworth Unit 44-34P49-003-20959 | KCS Mountain Resources Inc | Big HornManderson | PluggedOil Well | 6,620 | Aug 27, 1996 | 0 | 0 |
| Manderson Unit 21-19P49-003-20955 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,946 | Aug 13, 1996 | 174 | 1,881 |
| Manderson Unit 22-12PL49-003-20953 | Natural Gas Processing Company | Big HornManderson | ActiveGas Well | 7,958 | Jul 10, 1996 | 76 | 5,124 |
| Manderson Unit 11-33LP49-003-20949 | Natural Gas Processing Company | Big HornManderson | ActiveOil Well | 7,100 | Jun 19, 1996 | 0 | 0 |