The Economics of Mineral Benefication | PPT
The Economics of Mineral Benefication - Download as a PDF or view online for free. ... Chromium, which had sold for $3.90 a pound in 1980, was down to $3.70 in 1990. Tin, which was $8.72 a pound in 1980, was down to $3.88 a decade later. Julian Simon won because the price of three of the five metals went down in nominal terms and …