railroads reached to all the furnaces after 1877.39 Transportation The Pennsylvania State Works Canal linked northern and western Pennsylvania to Marietta and Columbia in 1830; its usefulness was in- creased in 1834 with the construction of the Columbia and Philadelphia Railroad which terminated at the

, however, amount of bituminous coal consumed at Safe Harbor Rolling Mill in Convention of Iron Masters, op. cit., Appendix, Table 3. 12. The Columbia Spy, 2 February 1856; George H. Burgess and Miles C. Kennedy, Centennial History of The Pennsylvania Railroad Company: 1846-1946 (Philadelphia, PA.: The