[Rockingham]

The gold involved in this process is mineralized and not in elemental form as in placer deposits. This restricts use of the process to gold telluride mineral deposits in hard rock. As placer miners, the Hoffmans would not benefit.

[rellimpank]

--and as you probably know, chlorination preceded cyanide in gold extraction, in batch-type pressure vessels, suitable mostly for small scale workings--

--and for those who think cyanide in hard to process, pressurized chlorine is orders of magnitude more so--