1. Departamento de Geofísica Universidad de Chile Santiago Chile
2. Advanced Mining Technology Center Santiago Chile
3. Institute for Geophysics, University of Texas at Austin Austin TX USA
4. College of Earth, Ocean and Atmospheric Sciences Oregon State University Corvallis OR USA
5. Departamento de Geología Universidad de Chile Santiago Chile
6. Geophysical Institute Karlsruhe Institute of Technology Karlsruhe Germany