http://b4hntuy3fimfh2227vf4f74emnya7p35i5brtqujs6leqvtclfwvjbqd.onion/doc/physics/diamonds-crookes/The%20Project%20Gutenberg%20eBook%20of%20Diamonds,%20by%20William%20Crookes..html
Other diamond mines are the Frank
Smith, Wesselton, the Kamfersdam, the
Kimberley West, the Newlands, and the
Leicester Mine. The surface of the country round Kimberley
is covered with a ferruginous red,
adhesive, sandy soil, which makes horse
traffic very heavy.