The appellant, a mechanical engineer, invented the 'Hydraform Machine' in 1988, a brick-making machine suitable for low-cost housing. In November 1995, he entered into an oral joint venture agreement with the respondent (an American businessman) and John Carter to market and sell the machines outside Africa through Palmerfield Ltd, a British Virgin Islands company. The appellant received 80% of shares while the respondent and Carter each received 10%. The appellant granted Palmerfield an exclusive licence to manufacture and sell the machines worldwide outside Africa. Despite extensive marketing efforts in Argentina (which had a 5.5 million unit housing backlog), only 8 machines were sold by January 1997. The venture struggled due to lack of capital and no market research was conducted. In September 1996, the appellant repudiated the joint venture agreement, which the respondent accepted and cancelled on 6 January 1997. The respondent sued for damages representing 10% of Palmerfield's value. Blieden J found the appellant liable and declared the respondent entitled to 10% of Palmerfield's value as at 6 January 1997. Willis J subsequently valued the shares at US$100,000.