2. What are the locations of the major mining activities in South Africa?
Southern and Western Cape
Phalaborwa
North West Province

3. Discuss each of the following:
3.1. open pit mining
see previous section

3.2. the need to crush the ore bearing rock
see previous section

3.3. The insoluble calcium phosphate that is mined is made into a water soluble salt by treatment with sulphuric acid to produce “superphosphate”.

Ca₃(PO₄)₂ + 2H₂SO₄ → 2CaSO₄ + Ca(H₂PO₄)₂

3.4. the insoluble calcium phosphate that is mined is made into a water soluble salt by treatment with phosphoric acid acid to produce “triplesuperphosphate”.

Ca₃(PO₄)₂ + 4H₃PO₄ → 3Ca(H₂PO₄)₂