Sulphur occurs about Cloze (1): JXUwMDZhJXUwMDAyJXUwMDAw metres underground. The soil structure in these areas is usually weak and can easily cave in. Digging of tunnels is thus discouraged in trying to extract the mineral.

Sulphur is extracted by drilling Cloze (2): JXUwMDJjJXUwMDFjJXUwMDFhJXUwMDE3JXUwMDAw concentric /round pipes of diameter of ratios 2:8:15 centimeters.

Superheated water at Cloze (3): JXUwMDY5JXUwMDA2JXUwMDA3 ^oC and 10 atmosphere pressure is forced through the Cloze (4): JXUwMDM3JXUwMDFhJXUwMDAxJXUwMDExJXUwMDE3JXUwMDFmJXUwMDAyJXUwMDFjJXUwMDA3 pipe.

The high pressures ensure the water remains as liquid at high temperatures instead of vapour /gas.

 The superheated water Cloze (5): JXUwMDM1JXUwMDA4JXUwMDA5JXUwMDE4JXUwMDA3 the sulphur because the melting point of sulphur is lower at about at about 115^oC. A compressed air at Cloze (6): JXUwMDY5JXUwMDA0 atmospheres is forced /pumped through the Cloze (7): JXUwMDMxJXUwMDA3JXUwMDAwJXUwMDBiJXUwMDE3JXUwMDFmJXUwMDAyJXUwMDFjJXUwMDA3 pipe.

The hot air forces the molten sulphur up the Cloze (8): JXUwMDM1JXUwMDA0JXUwMDBkJXUwMDAwJXUwMDA4JXUwMDA5 pipe where it is collected and solidifies in a large tank.Sulphur obtained is about 99% pure.