| Mine Name and YSU Mine Number | PORTER (NO. 2), PORTER | MAHO000074 |
| Townships | Boardman | ... | ... | Quadrangle 001 | Columbiana Quad |
| Lots | GREAT LOT 31 (SE | Quadrangle 002 | ... |
| County, State | Mahoning | OH | UTM | 17 487,100 2,514,300 |
| DOM Map Number | MG-70 | Seam Elevation | 1117';1120'(TOP |
| OGS Mine Number | Seam Thickness | 2'4";2'7 1/2" |
| USBM Document Number | 321581 | Cover Thickness | 80' ASO;82' |
| Mine Type and Commodity Mined | SHAFT | COAL | Drain Level | ABOVE |
| Seam Code 001 | MIDDLE KITTANNING, GREAT VEIN | Hazard Potential | HIGH |
| Seam Code 002 | LOWER MERCER | Mapped | Yes |
| Date Opened | Date Closed | 1934 | Located | Yes |
| Operator 001 | PORTER BROS. & SLAGLE | Operator 001 Date Opened |
| Operator 001 Date Closed |
| Operator 002 | PORTER BROS. | 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 | Near Woodworth, Boardman Twp. [56]. Mine map [1] shows: shaft, top elev. 1050.0', bottom elev. |
| 970.0'; 2nd shaft; area marked "old workings"; new shaft @ 100' N of Western Reserve Rd.; old shaft |
| @ 300; NW of intersection of Western Reserve Rd. & Youngstown-East Liverpool Rd. County mine |
| No. Mg 524. |
| Last Update: | Wednesday, February 17, 1999 |