| DIDre Iii Lp/jeannette | Jeannette | — | ◇ UNVERIFIED |
| DRDuncannon Rmc Plt | Duncannon | — | ◇ UNVERIFIED |
| EIEastern Ind Asphalt | Lancaster | — | ◇ UNVERIFIED |
| EIEastern Ind INC Div Nesl CO Inc/oley | Oley | — | ◇ UNVERIFIED |
| ECEddies Clnr Hanover/hanover | Hanover | — | ◇ UNVERIFIED |
| EGEdward Greene & Sons | Susquehanna | — | ◇ UNVERIFIED |
| ESEldorado Stone - Greencastle (antrim Commons) | Greencastle | — | ◇ UNVERIFIED |
| ESEldorado Stone Mfg Plt | Greencastle | — | ◇ UNVERIFIED |
| EIEljer Inc/ford City Plt | Ford City | — | ◇ UNVERIFIED |
| EHEp Henry | Parker Ford | — | ◇ UNVERIFIED |
| EMEpic Metals Corp/rankin | Rankin | — | ◇ UNVERIFIED |
| ECEssroc Cement CORP - Plant 3 | Nazareth | — | ◇ UNVERIFIED |
| EMEssroc - Mcquiston Plt | Bessemer | — | ◇ UNVERIFIED |
| FIFalconer-lewistown INC | Lewistown | — | ◇ UNVERIFIED |
| FCFrank Casilio & Sons, INC | Allentown | — | ◇ UNVERIFIED |
| FCFrank Casilio & Sons, INC | Bethlehem | — | ◇ UNVERIFIED |
| FTFuzion Tech/freeport Brick Div | Freeport | — | ◇ UNVERIFIED |
| FTFuzion Tech/kittanning Brick Div | Adrian | — | ◇ UNVERIFIED |
| GCGe CO Bridgeville Glass Plant | Bridgeville | — | ◇ UNVERIFIED |
| GSGeneral Shale Brick INC Plant # 39 | Darlington | — | ◇ UNVERIFIED |
| GBGlass Beads CO | Latrobe | — | ◇ UNVERIFIED |
| GGGlen Gery Bigler Plt | Bigler | — | ◇ UNVERIFIED |
| GHGlen-gery Hanley Plt | Summerville | — | ◇ UNVERIFIED |
| GGGlen Gery York Brick Plt | York | — | ◇ UNVERIFIED |
| GOGlenn O Hawbaker/canton Aggregate Plt 21 | Canton | — | ◇ UNVERIFIED |
| GBGraffius Burial Vault Mfg Plt | Sinking Spring | — | ◇ UNVERIFIED |
| GIGuardian Ind Corp/jefferson Hills | Clairton | — | ◇ UNVERIFIED |
| HKHaines & Kibblehouse/locust Ridge Quarry | Pocono Lake | — | ◇ UNVERIFIED |
| HEHalliburton Energy Svc/indiana Plt | Homer | — | ◇ UNVERIFIED |
| HCHanna Clnrs/red Lion | Red Lion | — | ◇ UNVERIFIED |
| HRHanson Ready Mix INC | State College | — | ◇ UNVERIFIED |
| HWHarbison Walker International-chlorinator | Claysburg | — | ◇ UNVERIFIED |
| HPHarmar Plt | Cheswick | — | ◇ UNVERIFIED |
| HMHarsco Metals - Coatesville | Coatesville | — | ◇ UNVERIFIED |
| HMHarsco Metals - Natrona Facility - Gate 10 | Natrona Heights | — | ◇ UNVERIFIED |
| HPHeckett Plant #21 | Natrona Heights | — | ◇ UNVERIFIED |
| HCHma Concrete LLC Dba Heritage Concrtete Avondale Facility | Avondale | — | ◇ UNVERIFIED |
| HRHorgan Recycling Inc/west Point | West Point | — | ◇ UNVERIFIED |
| IDIcmi/nukote Dunbar Plt | Connellsville | — | ◇ UNVERIFIED |
| ICInternational Chimney CORP | Kittanning | — | ◇ UNVERIFIED |
| IMIsp Minerals Charmian Quarry | Blue Ridge Summit | — | ◇ UNVERIFIED |
| JCJ C Howard Concrete Batch Plt | Carnegie | — | ◇ UNVERIFIED |
| JSJeannette Specialty Glass | Jeannette | — | ◇ UNVERIFIED |
| JSJeannette Specialty /jeannette Shade & Novelty | Jeannette | — | ◇ UNVERIFIED |
| JSJohnstown Storage | Johnstown | — | ◇ UNVERIFIED |
| JRJ & R Slaw Precast Plant | Lehighton | — | ◇ UNVERIFIED |
| JCJuniata College | Huntingdon | — | ◇ UNVERIFIED |
| JCJuniata Concrete CO - Mifflintown Plant 2 | Mifflintown | — | ◇ UNVERIFIED |
| JCJuniata Concrete CO - Newport Plant 3 | Newport | — | ◇ UNVERIFIED |
| KMKane Magnetics Intl/kane | Kane | — | ◇ UNVERIFIED |
