| Mine Name and YSU Mine Number | WELLENDORF, WELINGDORF | MAHO000103 |
| Townships | Youngstown | ... | ... | Quadrangle 001 | Youngstown Quad |
| Lots | GREAT LOT 28 | Quadrangle 002 | ... |
| County, State | Mahoning | OH | UTM | 17 515,500 2,510,550 |
| DOM Map Number | Seam Elevation |
| OGS Mine Number | 21 | Seam Thickness |
| USBM Document Number | Cover Thickness |
| Mine Type and Commodity Mined | SHAFT | COAL | Drain Level |
| Seam Code 001 | Seam Information Unavailable | Hazard Potential | HIGH |
| Seam Code 002 | Seam Information Unavailable | Mapped | No |
| Date Opened | 1884 | Date Closed | 1885 | Located | Yes |
| Operator 001 | ANDREWS BROS. | Operator 001 Date Opened | 1884 |
| Operator 001 Date Closed | 1885 |
| Operator 002 | ANDREWS & CO. | 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 | Located at 340 Avondale; shaft filled with dirt [5]. Homes on site [4]. |
| Last Update: | Wednesday, February 17, 1999 |