A notarial prospecting agreement concluded in 1977 between the trustee of the Bafokeng Tribe and Palmiet Chrome Corporation granted prospecting rights and contained an option to acquire a mineral lease. The option required the lessee, during the five‑year prospecting period, to give written notice to specified parties and to state a date within that period on which mining operations would commence. The appellant, Millsell Chrome Mines, became cessionary of Palmiet’s rights. In July 1982, shortly before expiry of the prospecting period, the appellant executed a notarial document purporting to exercise the option. Disputes arose as to whether the option was validly exercised, whether the statutory requirement of notarial execution was met, whether notice was properly given timeously, and whether a commencement date for mining was validly stated. The Minister of Land Affairs, as trustee of the Bafokeng Tribe, sought declaratory relief that no mineral lease had come into existence.