| Mine Name and YSU Mine Number | NATIONAL (NO. 2), NATIONAL, STOUFFER, | MAHO000011 |
| Townships | Green | ... | ... | Quadrangle 001 | Salem Quad |
| Lots | SEC. 35 | Quadrangle 002 | ... |
| County, State | Mahoning | OH | UTM | 17 456,500 2,478,000 |
| DOM Map Number | MG-11 | Seam Elevation | 1041' (TOPO) |
| OGS Mine Number | Seam Thickness | 2.5-3.5';3-4' |
| USBM Document Number | 321584 | Cover Thickness | 40'ASO;44';30' |
| Mine Type and Commodity Mined | SHAFT | COAL | Drain Level | BELOW |
| Seam Code 001 | LOWER MERCER | Hazard Potential | HIGH & MOD |
| Seam Code 002 | CLARION | Mapped | Yes |
| Date Opened | 1881 | Date Closed | 1903 | Located | Yes |
| Operator 001 | WALTERS & CO. | Operator 001 Date Opened | 1880 |
| Operator 001 Date Closed | 1883 |
| Operator 002 | WASHINGTONVILLE MINING CO. | Operator 002 Date Opened | 1896 |
| Operator 002 Date Closed | 1900 |
| Operator 003 | NATIONAL COAL & CLAY CO. | Operator 003 Date Opened | 1901 |
| Operator 003 Date Closed | 1903 |
| 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 | Mine map [1] shows: 1 slope; 1 shaft; several areas of "old works," extent not known; several areas |
| marked "fallen"; portion of mine flooded. A portion of this mine underlies the National (No. 1) mine |
| (Mg-6). |
| Last Update: | Wednesday, February 17, 1999 |