A cylindrical dedusting apparatus has an upper material infeed opening to introduce material into a frusto-conical infeed hopper centered over the tip of a conical wash deck supported over an air infeed conduit. The network devices provide, to the user device, the default workflow and receive user input to the default workflow. The battery pack includes frame member surrounding the packing member packing the battery element and a coating layer constituted of a curable resin formed on surfaces of the packing member which are surrounded and demarcated by the frame member. The present invention also provides methods of preparing an electrically conductive element to have low electrical contact resistance and high corrosion resistance. The method may further include diffusing the first second conductivity type impurity regions in a second heat treatment.