| Trail of Geology 20–120.0 |
 | Outstanding geologic feature of Pennsylvania—Cornwall mines, Lebanon CountybyReese, S. O., and Weber, Michael2020 |
| Suggested Citation: | Reese, S. O., and Weber, Michael, 2020, Outstanding geologic feature of Pennsylvania—Cornwall mines, Lebanon County: Pennsylvania Geological Survey, 4th ser., Trail of Geology 20–120.0, 1 p. [Available online.] |
| Description: | TG 20–120.0 is an illustrated, one-page summary about the formation of the iron-ore deposits that were mined at Cornwall in Lebanon County, Pa. The Cornwall mines operated from 1732 to 1973, and during many of those years was the largest mine in America. |
| Download Publication: | Click Here (1 MB) |