Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,150 pages of information and 223,040 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.