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Various

"Scientific American Supplement No. 819, September 12, 1891"


[Illustration: APPARATUS FOR THE TREATMENT OF REFRACTORY ORES.]
Quantities of refractory ores treated by this process are said to have
demonstrated that the whole of the gold in the ore is extracted. The
successful outcome of these trials is stated to have resulted in the
Anglo-French Exploration Co. acquiring the right to work the process
on the various gold fields of South Africa. It is anticipated that the
process will thus be immediately brought to a test by means of
apparatus erected on the gold fields under circumstances and
conditions of absolute practical work. As is well known, gold-bearing
ores in South Africa which are below the water line are, by reason of
the presence of sulphur, extremely difficult to deal with, and are
consequently of small commercial value. The gold in these ores, it is
maintained, will, by the new process, be extracted and saved, and make
all the difference between successful and unsuccessful mining in that
country.
It will have been seen that the peculiar and essential features of the
invention consist in subjecting every particle of the ore under
treatment to the process in all its stages instead of in bulk, thereby
insuring that no portion shall escape being acted upon by the gases
and the absorbing metal.


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