| Mine Name and YSU Mine Number | OAK HILL | COLU000045 |
| Townships | SALEM | ... | ... | Quadrangle 001 | SALEM |
| Lots | SEC. 2 | Quadrangle 002 |
| County, State | Columbiana | Ohio | SDP | 17 450,900 2,476,900 |
| DOM Map Number | CA-40 | Seam Elevation | 940'-950' |
| OGS Mine Number | Seam Thickness | 5 1/2-6' |
| USBM Document Number | 321426 | Cover Thickness | 240' MAX |
| Mine Type and Commodity Mined | SLOPE | COAL&CLAY | Drain Level | BELOW |
| Seam Code 001 | LOWER MERCER, LOWER MERCER (NO. 3), NO. 3 | Hazard Potential | MODERATE |
| Seam Code 002 | ... | Mapped | Yes |
| Date Opened | 1915 | Date Closed | 1915 | Located | Yes |
| Operator 001 | OAK HILL COAL CO. | Operator 001 Date Opened | 1897 |
| Operator 001 Date Closed | 1897 |
| Operator 002 | COLUMBIA FIRE CLAY CO. | Operator 002 Date Opened | 1904 |
| Operator 002 Date Closed | 1914 |
| 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 | Mine map [1] shows: 1 slope opening; 1 air shaft; area of old works; rooms 25' wide; ribs 30' wide. |
| Last Update: | Friday, May 21, 1999 |