This site is HUGE! I just spent an hour or so wandering around this site. A search for "gold" brings up this multitude of articles.
http://chestofbooks.com/search.html?cx=000348145676127462126%3Anjhvjbiv4do&cof=FORID%3A10&q=gold&sa=Search&siteurl=chestofbooks.com%2Fcrafts%2Fmechanics%2FCyclopaedia%2FTesting-Gravel-For-Gold.html&siteurl=chestofbooks.com%2Fcrafts%2Fmechanics%2FCyclopaedia%2FTesting-Gravel-For-Gold.html#941
Also, there's a lot of old Scientific American mags and books, back when SA was more practical than theoretical.
After writing this, I did find that this site had been mentioned recently on the forum.
http://www.goldrefiningforum.com/phpBB3/viewtopic.php?f=41&t=6162&p=59117&hilit=chestofbooks#p59117
http://chestofbooks.com/search.html?cx=000348145676127462126%3Anjhvjbiv4do&cof=FORID%3A10&q=gold&sa=Search&siteurl=chestofbooks.com%2Fcrafts%2Fmechanics%2FCyclopaedia%2FTesting-Gravel-For-Gold.html&siteurl=chestofbooks.com%2Fcrafts%2Fmechanics%2FCyclopaedia%2FTesting-Gravel-For-Gold.html#941
Also, there's a lot of old Scientific American mags and books, back when SA was more practical than theoretical.
After writing this, I did find that this site had been mentioned recently on the forum.
http://www.goldrefiningforum.com/phpBB3/viewtopic.php?f=41&t=6162&p=59117&hilit=chestofbooks#p59117
