| Mine Name and YSU Mine Number | THORN HILL (NO. 1) | MAHO000113 |
| Townships | Youngstown | ... | ... | Quadrangle 001 | Campbell Quad |
| Lots | GREAT LOT 45 | Quadrangle 002 | ... |
| County, State | Mahoning | OH | UTM | 17 535,100 2,517,700 |
| DOM Map Number | Seam Elevation |
| OGS Mine Number | 31 | Seam Thickness | 4' MAX |
| USBM Document Number | Cover Thickness |
| Mine Type and Commodity Mined | SLOPE | COAL | Drain Level | ABOVE? |
| Seam Code 001 | Seam Information Unavailable | Hazard Potential | MODERATE |
| Seam Code 002 | Seam Information Unavailable | Mapped | No |
| Date Opened | Date Closed | Located | Yes |
| Operator 001 | CHAUNCEY ANDREWS & HITCHCOCK | Operator 001 Date Opened |
| Operator 001 Date Closed |
| Operator 002 | ... | Operator 002 Date Opened |
| Operator 002 Date Closed |
| Operator 003 | ... | Operator 003 Date Opened |
| Operator 003 Date Closed |
| Operator 004 | ... | Operator 004 Date Opened |
| Operator 004 Date Closed |
| Operator 005 | ... | Operator 005 Date Opened |
| Operator 005 Date Closed |
| Operator 006 | ... | Operator 006 Date Opened |
| Operator 006 Date Closed |
| Operator 007 | ... | Operator 007 Date Opened |
| Operator 007 Date Closed |
| Operator 008 | ... | Operator 008 Date Opened |
| Operator 008 Date Closed |
| Remarks | This mine connects with the Allen (No. 2) mine (Mg-76); slope is partially slumped [5]. |
| Last Update: | Wednesday, February 17, 1999 |