Hi, Just purchased your Target ID Bible for the Minelab Manticore and going through it. I appreciate your time and hard work on putting this together. Had a question on this part, "- A lesson on target ID and conductivity." I assume this is addressed under the "Nuances of Target ID", I see the chart with Material / Resistivity / Conductivity. My question is in the pdf I see no reference to or explaination of that chart. I was hoping for a little more detail around that section. Are there some other references/material to add to that discussion. Thanks again for your time. Jeff scubajeff2.reg@gmail.com (mailto:scubajeff2.reg@gmail.com)