Security Rock Bits
From Graces Guide
of Openshaw, Manchester.
- 1954 Private company.
- 1961 Manufacturers of rock bits used in oil well drilling operations. 250 employees. [1]
See Also
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Grace's Guide To British Industrial History
Registered UK Charity (No. 1154342)Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,712 pages of information and 247,105 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.