ANOTHER EDISON INVENTION
SEPARATING GOLD FROM SAND. LONDON, April SO. The Daily Express states that Edison has perfected an air-blast for the separation of gold from sand without the use of water. I Edison's gold separator is more costly than the hydraulic system, but it extracts a greater proportion of gold. The air is driven through falling screens of crushed material, the gold being winnowed out.
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Bibliographic details
Otago Witness, Issue 2561, 6 May 1903, Page 30
Word Count
66ANOTHER EDISON INVENTION Otago Witness, Issue 2561, 6 May 1903, Page 30
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