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Mineurs Détecteur Mod Installer pour Minecraft Pocket (MPCE)
The Miners Detector Mod for Minecraft Pocket (MCPE) adds an extremely useful (and not overpowered) ore detection tool also known as the compass. A good thing to make it not too overpowered is that you are required to be within a reach of 4 blocks of a valuable ore to be able to detect it.