Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,258 pages of information and 244,500 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
of High Wycombe
1930 Private company.
Late 1950s: Mavor and Coulson acquired Austin Hoy with its associate Hoy Carbides to provide a source of hard metal cutting elements, cutting chains and picks for its own machines and others.
1961 Manufacturers of coal-cutter chains of special design and variety of accessories for mining machinery, coal cutter jibs, brackets and sprockets. 180 employees. [1]
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