As a result, many of the world's deepest mines exist here. But mining in Witwatersrand has also unearthed something else: billion-year-old brine. This fluid is hidden in the cracks of ancient ...

a colossal mine in Africa is the deepest and richest gold mine in the world. Mponeng gold mine began producing gold back in 1986 and was previously known as Western Deep Levels No1 Shaft.

It is a mineral used to make types of plaster which coat our homes, schools and offices - and in Cumbria sits the world's ...

Birkshead mine near Appleby-in-Westmorland is a 1000 ... Andrew Carter discovered a world apart, as deep as the Pennines are high, that supplies the raw materials to make plasterboard for the ...

The journey — about 1,400 feet underground to the world's deepest hotel in the north Wales region of Snowdonia — takes nerve. Guests descend into dark caverns, navigate flooded tunnels ...