Diamond Rock Boring Co: Difference between revisions
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1872 Public company formed to acquire the business of the [[Machine Tunnelling Co]], formed for trial purposes in 1870<ref>The Times, Dec 07, 1872</ref> | 1872 Public company formed to acquire the business of the [[Machine Tunnelling Co]], formed for trial purposes in 1870<ref>The Times, Dec 07, 1872</ref> | ||
1873 Working the patents of Major Beaumont for diamond drillng machine<ref>The Times, Aug 23, 1873</ref> | |||
== See Also == | == See Also == | ||
Revision as of 11:00, 12 November 2013
1872 Public company formed to acquire the business of the Machine Tunnelling Co, formed for trial purposes in 1870[1]
1873 Working the patents of Major Beaumont for diamond drillng machine[2]
See Also
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