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of Springfield Mill, Polton
1866 William Tod acquired the empty Sprinfield Mill; he already owned the St Leonard’s Mill in Lasswade.
1898 The company was registered on 22 June, to take over the business of paper makers of the firm of the same name. 
1923 "We note with interest that a Midlothian firm - William Tod, Junior, and Co claims to have perfected a process for making a new electrical insulating material from various waste products produced in its paper mills. The new substance, to be called "Indurite", is said to be superior in some respects to vulcanite or ebonite, and has been favourably reported upon by Professor Bailey, of Edinburgh."