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 167,797 pages of information and 247,161 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.

Security Rock Bits: Difference between revisions

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Marianne (talk | contribs)
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New page: of Manchester * 1954 Private company. * 1961 Manufacturers of rock bits used in oil well drilling operations. 250 employees. ==Sources of Information== * 1961 Dun and Bradstreet KBE
 
AlanC (talk | contribs)
32,306 edits
m AlanC moved page Security Rook Bits to Security Rock Bits: spelling
(No difference)

Revision as of 17:46, 24 November 2016

of Manchester

  • 1954 Private company.
  • 1961 Manufacturers of rock bits used in oil well drilling operations. 250 employees.

Sources of Information

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