Secrets of Metal Detection
When it comes to prospecting precious metals, a metal detector plays a crucial role. For the uninitiated, a metal detector is exactly what it sounds like an electronic device that detects the presence of nearby metals.There is a wide range of detectors available on the market. However, they typically utilize two types of frequencies: Very Low Frequency (VLF) and Pulse Induction (PI). While a VLF device uses two coils working together, PI can use one or more coils in...