| 601 | TRAISTER 00 | Armstrong County, PA | Gas Property | Dec 2025 |
| 602 | TRILOGY | Armstrong County, PA | Gas Property | Dec 2025 |
| 603 | TRUITT | Armstrong County, PA | Gas Property | Dec 2025 |
| 604 | TUTAK | Armstrong County, PA | Gas Property | Dec 2025 |
| 605 | UNGER | Armstrong County, PA | Gas Property | Dec 2025 |
| 606 | UPPERMAN | Armstrong County, PA | Gas Property | Dec 2025 |
| 607 | V L BOYER | Armstrong County, PA | Gas Property | Dec 2025 |
| 608 | V R DOUGHERTY ETAL | Armstrong County, PA | Gas Property | Dec 2025 |
| 609 | V. U. MEGNIN | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 610 | VANPORT | Armstrong County, PA | Gas Property | Dec 2025 |
| 611 | VERNON BOYER | Armstrong County, PA | Gas Property | Dec 2025 |
| 612 | VIGO 00 | Armstrong County, PA | Gas Property | Dec 2025 |
| 613 | VIRAG | Armstrong County, PA | Gas Property | Dec 2025 |
| 614 | W BYRD JR & JANE W | Armstrong County, PA | Gas Property | Dec 2025 |
| 615 | W CRO | Armstrong County, PA | Gas Property | Dec 2025 |
| 616 | W E ORR | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 617 | W H KUHNS H | Armstrong County, PA | Gas Property | Dec 2025 |
| 618 | W J ALCORN | Armstrong County, PA | Gas Property | Dec 2025 |
| 619 | W J ELKIN | Armstrong County, PA | Gas Property | Dec 2025 |
| 620 | W J SMA | Armstrong County, PA | Gas Property | Dec 2025 |
| 621 | W P MOWR | Armstrong County, PA | Gas Property | Dec 2025 |
| 622 | W R THOMPSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 623 | W. BYRD YEANY JR | Armstrong County, PA | Gas Property | Dec 2025 |
| 624 | WALKER | Armstrong County, PA | Gas Property | Dec 2025 |
| 625 | WALKER FARM | Armstrong County, PA | Gas Property | Dec 2025 |
| 626 | WALTER SHUSTER ET AL (HETRICK) | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 627 | WALTERS | Armstrong County, PA | Gas Property | Dec 2025 |
| 628 | WAREHAM 00 | Armstrong County, PA | Gas Property | Dec 2025 |
| 629 | WARNER 001 | Armstrong County, PA | Gas Property | Dec 2025 |
| 630 | WATTERSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 631 | WEILAND | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 632 | WESLEY SMITH | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 633 | WESLEY SMITH | Armstrong County, PA | Gas Property | Dec 2025 |
| 634 | WEST FARM | Armstrong County, PA | Gas Property | Dec 2025 |
| 635 | WHEATLEY | Armstrong County, PA | Gas Property | Dec 2025 |
| 636 | WHITE | Armstrong County, PA | Gas Property | Dec 2025 |
| 637 | WHITE | Armstrong County, PA | Gas Property | Dec 2025 |
| 638 | WILDA M STEWART | Armstrong County, PA | Gas Property | Dec 2025 |
| 639 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 640 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 641 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 642 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 643 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 644 | WILLIAM | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 645 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 646 | WILLIAM | Armstrong County, PA | Gas Property | Dec 2025 |
| 647 | WILLIAM A PEOPLES | Armstrong County, PA | Gas Property | Dec 2025 |
| 648 | WILLIAM F CLEPPER ETUX | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 649 | WILLIAM H RENSHAW ETUX | Armstrong County, PA | Gas Property | Dec 2025 |
| 650 | WILLIAM J | Armstrong County, PA | Gas Property | Dec 2025 |
| 651 | WILLIAM J | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 652 | WILLIAM R & LINDA M DOVERSPIKE | Armstrong County, PA | Gas Property | Dec 2025 |
| 653 | WILLIAMSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 654 | WILLIAMSON | Armstrong County, PA | Gas Property | Dec 2025 |
| 655 | WILSON | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 656 | WISE | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 657 | WISSINGER | Armstrong County, PA | Gas Property | Dec 2025 |
| 658 | WOLFE (ARMCLAR) | Armstrong County, PA | Gas Property | Dec 2025 |
| 659 | WOLK | Armstrong County, PA | Gas Property | Dec 2025 |
| 660 | WONDERS | Armstrong County, PA | Gas Property | Dec 2025 |
| 661 | WRIGHT | Armstrong County, PA | Oil & Gas Property | Dec 2025 |
| 662 | YANOSKI CRAWFORD | Armstrong County, PA | Gas Property | Dec 2025 |
| 663 | YOUNG | Armstrong County, PA | Gas Property | Dec 2025 |
| 664 | ZACOUR | Armstrong County, PA | Gas Property | Dec 2025 |
| 665 | ZBORAVAN | Armstrong County, PA | Gas Property | Dec 2025 |
| 666 | ZELEZNIK-200A | Armstrong County, PA | Gas Property | Dec 2025 |