18th September 2013, 01:10 PM
unit unless you evaluate the ploughzone (within your trench) by examining everything in your machine bucket you can not claim to evaluate a site, a geophysical survey can often depict anomalies that lie within the ploughzone and nowhere else. your argument, which i understand the point of, is flawed.
If they can get you asking the wrong questions, they don't have to worry about answers