AbstractsEarth & Environmental Science

"In view of the growing importance of the cyanide process and in that it seems destined to take an important place in the metallurgical treatment of gold and silver ores, the following tests have been taken as a thesis: It was intended at the onset to deal with varied ores and corroborate or establish any relation existing between such cyanicides as Cu, Bi, Sb, Mn, As, Fe, S and Te and the amount of cyanide consumed. This object however, was not fully realized owing to the fact that a large amount of work was done on ores No's. 1, 2, 3 and 4. Those being sulphides of various degrees of oxidization but containing none of the cyanicides above mentioned except Fe and S. The preliminary work on ores 1, 2, 3 & 4 concisted [sic] of: 1. Sampling 2. Assaying 3. Qualitative analysis 4. Acidity Determinations" – p. [1].