It was recently reported in the Financial Post that in-situ leaching of copper is an “unproven technology”. But after personally spending five years working at the in-situ copper leaching operation at San Manuel, Arizona, I can state that it has definitely been proven.

A little history may be required to better understand this technology, since it is not widely known.

For the full article, visit: http://www.northernminer.com/news/letter-to-the-ed…

Written by: Gary Sutton, BSc Geology and MBA
Former geologist responsible for ore reserves at San Manuel Mine