|M. Coryell
| & Columbia | | |stringers| track | |
| Railroad | | | | | |
| | | | | | |
5|Boston & |1844|Sulphate |Ties | " | " |I. Hinckley
| Providence | | of iron | | | |
| Railroad | | | | | |
| | | | | | |
6|Belvedere |1850|Salt |Hemlock | " | " |M. Coryell
| Railroad | | | | | |
| | | | | | |
7|Baltimore |1850|Lime |Ties | " | " |J.L. Randolph
| & Ohio | | | | | |
| Railroad | | | | | |
| | | | | | |
8|Rochester |1852|Payenizing |Ties | " | " |T. Hilliard
| | | | | | |
9|Germantown, |1855|Charring |Fence |Fence |Favorable|G. McGrew
| Ind. | | | posts | | 1879 |
| | | | | | |
10|Pottsville, |1857|Pyrolig'ite|Timber |Railroad |Unfavor.
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