North British Aluminium Co
1924 The North British Aluminium Co was incorporated by British Aluminium Co to construct and operate aluminium works in Inverness-shire, including carrying out for the Lochaber Power Co a sufficient portion of the hydraulic and hydro-electric works to supply the aluminium works[1]
1929 The Lochaber smelter opened, involving the longest tunnel of its kind in the world, under the foot of Ben Nevis.
1936 British Aluminium Co made a large loan to the company to enable it to redeem its debentures and so British Aluminium owned all of the assets of the company[2]