of Shotley Grove Paper-Mills, of Shotley Bridge, near Durham (c.1830)
c.1856 Installed a compound mill engine by Robert Stephenson and Co, designed by Jeremiah Head.
Maybe the same as:
of Polton Mill, Midlothian
1899 The company was registered on 15 December, to acquire the business of paper manufacturers of a private company of the same name. [1]
1914 Installed new power plant[2]