Editing Lyon Mountain, New York (section)

==Industry==
[[Republic Steel Corporation]] was one of the last major steel firms to use low-phosphorus Adirondack [[magnetite]]s, operating the Chateaugay Ore & Iron Company from 1939 to 1967. The Chateaugay mine was one of the deepest commercial [[iron ore]] mines in the United States, with [[stoping|stopes]] as much as {{convert|3500|ft}} below the surface. Lyon Mountain's iron ore was considered the best in the industry and was the material of choice for [[John A. Roebling|John Roebling and Sons]] in the construction of the [[Brooklyn Bridge]].<ref name="LGooley">{{cite book| first=Lawrence P.| last=Gooley| title=Lyon Mountain: The Tragedy of a Mining Town| year=2004| publisher=Bloated Toe Publishing| isbn=978-1-939216-19-9| location=Peru, NY}}</ref> In later years, Roebling used Lyon Mountain ore in the construction of the [[George Washington Bridge]] and the [[Golden Gate Bridge]].<ref name="LGooley"/>