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North Eastern Marine Engineering Co of South Docks, Sunderland and Wallsend-on-Tyne
1865 Company incorporated - Sunderland Engine Works
1882 The Northumberland Engine Works and Forge of this company were established at Wallsend.
1899 Fourth largest British manufacturer of engines for ships at 55,800ihp at Wallsend; the separate Sunderland yard produced 27575ihp
1899 See 1899 Shipbuilding Statistics for details of production this year.
1914 Marine Engineers and Boilermakers. Specialities: Marine Engines and Marine Boilers. Employees 3,000 to 4,000. 
1914 Directory: Listed as Boiler Makers. 
1920 Issued booklet 'The Application of Superheated Steam to Marine Engines'. Of Wallsend and Sunderland. Contains descriptions of their marine engines, turbines, marine oil engines, boilers, condensers, feed and ballast pumps, evaporators, feed-water cleaners and heaters, circulating pumps etc. 
1922 Products included reciprocating and turbine engines and boilers, "N.E." superheaters, "N.E. Werkspoor " marine oil engines, auxiliary machinery.
1924 Advert as designers, builders and repairers of reciprocating and turbine engines and boilers for all classes of vessels and a lot more. Of Wallsend-on-Tyne and Sunderland. 
1954 Name changed.
1961 Marine and general engineers, ironfounders, producing marine engines and boilers. 1,600 employees. 
Later George Clark and N. E. M. Ltd
A series of tours of the Works were provided in 1880 and published in The Engineer. They can be read by following the links below;