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George Clark(e), Southwick Engine Works, Crown Road, Southwick, Sunderland
1848 George Clark founded his business at Monkwearmouth,
Mainly engaged in manufacturing pumping and winding engines for collieries and ironworks and marine engines.
1864 The founder's son, George Clark (1843-1901), took over the direction of the company from his father due to his illness
Increasing business led to the company moving premises twice - the second move was to the Southwick Engine Works which were erected in 1872
1881 Visit by the members of the Institution of Mechanical Engineers.
1885 January 15th. George Clark senior died.
1914 Directory: Listed as Mechanical Engineers 
1954 Name changed.
1955 Name changed.
1960 Name changed.
1961 Marine engineers, manufacturing "Clark-Sulzer" diesel engines. 1,300 employees. 
Later George Clark and N. E. M. Ltd