... , Measurement range: 20,000nT~100,000nT, Resolution: 0.1nT. Underground Iron Mine Detector WCZ-1WCZ-1 proton magnetic detector is the ... survey in mineral prospecting: iron ore, zinc lead ore, copper ores etc; Study ore’s buried depth, vein direction, continuity, shape and ... of small ferromagnetic object and so on. WCZ-1 Underground Iron Mine Detector