A portable light includes an elongated housing having a longitudinal axis, a light source positioned within the elongated housing, and an attachment member movably coupled to the elongated housing to hang the portable light from a support structure. The taggants comprise a crystalline taggant doped with two rare earth ions. The main extent direction of the bypass conveyor pipe sections runs along the main conveyor pipe. The chip device has an input terminal in electrical communication with the motor terminal, an input terminal in electrical communication with the motor terminal, and an earth terminal.