Solutions For A Complex World Image by Shawn Calendine   Geophysics for Acid Mine Drainage Article by: Joe Cain | Geologist | hydroGEOPHYSICS According to the US Environmental Protection Agency, more than half a million abandoned coal and metal mines are discharging acid mine drainage (AMD)…

Introducing The New HGI Seattle Office HGI is pleased to announce that we have opened a new office in the Seattle, Washington area.  As we continue to expand our range of geophysical offerings, this new location will enable HGI to more effectively and efficiently provide the latest geophysical…