http://copperinvestingnews.com/23154-isr-copper-projects-excelsior-mining-copper-fox-metals-taseko-curis-arizona.html
"Elmer Stewart, CEO of Copper Fox Metals11 (TSXV:CUU12), spoke with Copper Investing News about the benefits of the extraction method and noted the low costs associated with the process13 — since less equipment is required, the process utilizes less capital on the front end. The method also cuts down on potential hazards to employees due to accidents or contaminated dust inhalation, which can lead to additional heath issues.
Stewart also stated there is minimal noise involved with this method of extraction, allowing for better on-site communication and fewer disruptions for neighboring communities."