A coffee bean grinder includes a grinding apparatus, a hopper, a receptacle, and an electrical ground contact. The hopper is arranged with respect to the grinding apparatus for feeding coffee beans to the grinding apparatus. The receptacle is for receiving coffee beans that have been ground by the grounding apparatus. The receptacle includes an electrically conductive material and is removable from a location where the receptacle is arranged to receive ground coffee beans from the grinding apparatus. The electrical ground contact is electrically connected with ground and is positioned with respect to the grinding apparatus such that when the receptacle is arranged to receive ground coffee beans from the grinding apparatus, the electrically ground contact contacts the receptacle.