| Mine Name and YSU Mine Number | PROSPECT HILL, PROSPECT SLOPE, PROSPECT HILL | COLU000037 |
| Townships | UNITY | MIDDLETON | ... | Quadrangle 001 | EAST PALESTINE |
| Lots | SECS. 25,36 | SEC. 1 | Quadrangle 002 |
| County, State | Columbiana | Ohio | SDP | 17 425,800 2,545,000 |
| DOM Map Number | CA-32 | Seam Elevation | 1070' MAX |
| OGS Mine Number | Seam Thickness | 3-4';3'10" |
| USBM Document Number | 321445 | Cover Thickness | 130' MAX |
| Mine Type and Commodity Mined | SLOPE | COAL | Drain Level | ABOVE |
| Seam Code 001 | MIDDLE KITTANNING, MIDDLE KITTANNING (NO. | Hazard Potential | MODERATE |
| Seam Code 002 | ... | Mapped | Yes |
| Date Opened | 1914 | Date Closed | 1914 | Located | Yes |
| Operator 001 | PROSPECT HILL COAL CO. | Operator 001 Date Opened | 1900 |
| Operator 001 Date Closed | 1912 |
| 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 | Mine map [1] shows: 2 slopes; 3 drift openings; 1 air shaft; pillars were drawn; rooms 30' wide; |
| pillars 10' wide. This mine underlies portions of Ca-33, Ca-45, and Ca-93. |
| Last Update: | Monday, May 31, 1999 |