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 244,499 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.
1870 Formed for trial purposes.
1870 Demonstrated rapid rock boring on the property of the Croesor United Slate Co
1872 A public company, the Diamond Rock Boring Co was formed to acquire the business of the Machine Tunnelling Co, [1]
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