- Meeting of the "Prospectors and Developers Association of Canada" (P.D.A.C.). Toronto, Canada. March 2003.
- Meeting of the "Australian Society of Exploration Geophysicists" (A.S.E.G.). Brisbane, Australia. August 2001.
- Explorers Congress "ProExplo" of the "Instituto de Ingenieros de Minas del Per�" (I.I.M.P.). Lima, Peru. April, 2001. Toronto, Canada. March, 2003.
(If somebody had recently a look on my link to the ProExplo web site, you would have noticed that that site radically changed its content. That new content does not fit in my web site and I had to remove it inmediatly. I am very sorry about that)
- Meeting of the "Peruvian Geological Society" (S.G.P.). Lima, Peru. July, 2000.
- Mining Exhibition "ExpoMin".
Santiago, Chile. April, 1998.
- Annual meetings of the "German Geophysical Society" (D.G.G.) between 1991 and 1996.
