Interesting article by Max Meurling on platinum, palladium, and rhodium and their relationship to gold...
Platinum Group Metals - Truly Precious
March 19, 2009
http://seekingalpha.com/article/1261...
Small excerpt:
"In 2007, the world produced 78.7M Oz gold compared to only 7.1M Oz palladium, 6.6M Oz platinum and 824,000 Oz rhodium. Price per Oz in same order (approx.): 930 - 200 - 1000 - 1000."