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John Heaton (c1818-1897)
c1818 Born the son of Thomas Heaton, Foundryman, and his wife Isabella
1868 of the Langley Mill Steel and Iron Works, near Nottingham, joined the I.Mech.E
1869 Published 'Heaton's Process for the Treatment of Cast Iron and the Manufacture of Steel'
1869 'Mr. John Heaton's process for making' wrought iron and steel seems to be pretty generally admitted to be a most expeditious and thorough method, but it is still an open question in the minds of many whether it is sufficiently economical. Our readers are already aware that the basis of the method is the conversion of the carbon by means of nitrates of soda or potash. He also claims the use of chlorates...'
1869 John Heaton wrote at great length in The Engineer from 20 Great George Street, detailing the 'Heaton Process'.  The following statement was taken from the 1869 letter in The Engineer which he wrote to prove that the Heaton Process was being successfully employed.
'I annex a list of some of the firms who have purchased and used my steel during the past year, during which it has been frequently and falsely asserted that my process was not in commercial operation.
1870 Patent 1886. John Heaton of Eastwood, Notts. 'Improvement in Obtaining Motive Power'.
1871 Living at Eastwood, Notts: John Heaton (age 53 born Swalwell, Durham), Civil Engineer. With his wife Catherine Heaton (age 47 born Gateshead) and their two children John S. Heaton (age 7 born Widnes) and Elizabeth M. Heaton (age 3 born Eastwood). One servant.
1881 Living at Higham Colliery, Garden Villa, Dodworth, Yks: John Heaton (age 63 born Swalwell, Durham), Civil and Mining Engineer. With his wife Catherine Heaton (age 57 born Gateshead) and their son John Samuel Heaton (age 17 born Widnes), Civil and Mining Engineer Apprentice. 
1891 Living at 744 Rochdale Road, Manchester: John Heaton (age 73 born Swalwell, Durham), Civil Engineer. With his wife Catharine Heaton (age 67 born Gateshead) and their son John S. Heaton (age 27 born Widnes), Mechanical Engineer.