Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 149,270 pages of information and 234,239 images on early companies, their products and the people who designed and built them.
of Prometheus Works, Bridge Street, Sheffield.
Crucible steel makers.
1904 Their 'Magic' brand of tool steel was described in American Machinist as 'about half way between the carbon and high-speed steels', specially adapted for taking deep cuts on mild steel on turret lathe jobs.
1911 had developed steel for motor car chassis; also steel for general machine parts