The Anthracite Iron Industry of Lancaster County: Rolling Mills 1850-1900 By John Ward Willson Loose I. General Desciption Although rolling mills had been used early in the nineteenth century for reducing the thickness of bar iron produced at the forges, rolling mills as a separate industry were

markets. Accordingly, between 1840 and 1900 the newer technology resulted in the erection and operation �of fifteen pig iron blast furnaces and eight iron rolling mills in a triangle located within points at Lancaster, Safe Harbor and Marietta. Six furnaces were adjacent to Marietta, and two more lay