Dr. Ken Williams died from a freak home accident in Costa Rica a few years ago. Those who were familiar with him found him to be patiently helpful to all Gold Miners in untangling Gold mining chemistry problems - Ken, as a miner, himself, understood the specifics involved.
For a few years Ken's son kept that website up and running to continue his father's work. I frequently would return to "Basement Chemistry for the Prospector" and re-read Ken's information on a variety of mining subjects just to knock the cobwebs off.
Sadly, it seems that "Basement Chemistry" seems to be no more. I have been trying for two weeks to access it and receive error messages every time I try. I guess time and maintenance expenses finally caused its downfall.
Joe