... Measurement range: 20,000nT~100,000nT, Resolution: 0.1nT. Underground Iron Mine Detector WCZ-1WCZ-1 proton magnetic detector is the ... map of magnetic survey in mineral prospecting: iron ore, zinc lead ore, copper ores etc; Study ore’s buried depth, vein direction, continuity, ... shape and size, ore scale estimation;Oil &gas survey, and problems relative with ...