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Characterization and effectiveness of remining abandoned coal mines in Pennsylvania
| Location | Call # | Status |
|---|---|---|
| Joyner - Microforms B300 | I 28.23:9562 | ✔ Available |
Neutralization of acidic discharges from abandoned underground coal mines by alkaline injection
| Location | Call # | Status |
|---|---|---|
| Joyner - Microforms B300 | I 28.23:9468 | ✔ Available |