Geological newsletter in Spanish from Calvista Gold Corporation in Colombia
http://www.boletininformativonuestroportico.com/octubre20/nuestroportico.html
Sunday, October 21, 2012
Subscribe to:
Posts (Atom)
My Blog List
About Me
- Ricardo Valls
- Toronto, Ontario, Canada
- As a professional geologist with more than nineteen years in the mining industry, I have extensive geological, geochemical, and mining experience, managerial skills, and a solid background in research techniques, and training of technical personnel.