The story
The company was registered as African Explosives and Industries (AE&I) in 1924, with its headquarters in Johannesburg. It was formed as the result of a merger between the South African interests of Nobel Industries of the United Kingdom and the manufacturing arm of De Beers Consolidated Diamond Mines of Kimberley.
The company's primary purpose was to provide blasting explosives and detonators to South African gold and diamond mines but AE&I was also the only South African producer of phosphatic fertilizer. In 1944 the company was renamed as African Explosives and Chemical Industries (AECI).
AECI listed on the JSE Limited in 1966.
From Wikipedia’s article on AECI, shared under CC BY-SA 4.0.3