treatise on the metallurgical processes in use in the
cyaniding, refining and coining / by B.W.
The metallurgy of gold on 'the Rand' : a practical
use in the Transvaal, being a description of assaying, milling,
Rand' : a practical treatise on the metallurgical processes in
Transvaal, being a description of assaying, milling, cyaniding,