Posted by Burkhard Richthammer on May 09, 1999 at 06:38:20:

I am a student for mining engeneering in Aachen. (Germany)
At the moment I am working on a theses about GPS usage on excavation units in open pits.
Unfortunately it's difficult to find puplications in this subject.
If anyone could give me a hint I would be really glad.
Thank you for your support

B. Richthammer