Nathaniel Greenhalgh (c1885-1949)
1950 Obituary 
"NATHANIEL GREENHALGH was associated with the machine tool industry during almost the whole of his professional career.
He served his apprenticeship with the General Electric Company, Ltd., at Salford, and concurrently attended classes at the Salford Royal Technical College. After brief periods of employment with various engineering firms, including Messrs. Ferranti, Ltd., of Hollinswood, and Messrs. Vickers, of Sheffield, for both of whom he was engaged upon experimental work, he went to the United States, where he was employed by the General Electric Company, Ltd., of Canada, on the production of press tools. In 1911 he entered the drawing office of Messrs. Hans Renold, Ltd., of Manchester and, after acting as section leader for five years, and gaining further experience in the tool progress section of the planning department, was made senior superintendent of the light chain group.
From 1922 to 1930 he occupied a similar position in the tool room. He then began a connection with Messrs. Burton Griffiths and Company, Ltd., a subsidiary of Messrs. B.S.A. Tools, Ltd., which lasted to the end of his career. After holding the appointment of manager for the firm's interests in the North of England for two years he joined the board of directors.
In this latter capacity he was responsible for sales and the preparation of specifications. During the war of 1939-45 his services were lent to the Ministry of Supply as director of cutting tools, jigs, and gauges, whilst retaining his seat on the board of Messrs. Burton Griffiths and Company. After holding this appointment for some two years he resumed his duties with the latter company, which he continued to perform until his death, which occurred on 16th December 1948, in his sixty-third year. Mr. Greenhalgh was elected an Associate Member of the Institution in 1922, and was transferred to Membership in 1943. He was also a Member of the Institution of Production Engineers."