Coltness Iron Works
Coltness Iron Works of Newmains/Wishaw (1837 - 1927)
1837 They established the Coltness Iron Works.
1841 The Coltness Ironworks opened; it had 6 blast furnaces. It later added 2 open hearth furnaces for producing steel castings. 
By 1860 the proprietors had fourteen blast furnaces at Coltness and Dalmellington, capable of producing about 120,000 tons of pig iron annually.
1866 Accident at their pit near Crofthead. Listed as Coltness Iron Co.
Sources of Information
-  Clydebridge Steel Work history