Cumberland Diamond Rock Boring Co
See John Vivian
1881 Partnership change. '... the Copartnership heretofore subsisting between us the undersigned, Edward Wadham, William Barrow Turner, Augustus Horace Strongitharm, and John Vivian, under the name, style, and firm of the Cumberland Diamond Boring and Tunnelling Company, at Whitehaven, in the county of Cumberland, has been this day dissolved, by mutual consent, so far as regards the said William Barrow Turner...'
Up to 1886 the company bored most of the wells sunk at Middlesbrough to exploit the salt beds