The present invention relates to a round and spherical titanium dioxide scouring media and a method for producing the media. When it is determined that the belt has reached an acceptable range of positions, the belt is steered inward using a given operational steering angle. Embodiments may include sunset indicator, solar altitude indicator, indicators for the maximum solar altitudes on the summer andor winter solstice dates, and alignment aid. A plurality of lamps can be joined together to provide an EL lamp substantially larger than obtainable by other means. Each compartment has its own lockable door. The duty cycle is selected such that the average and peak power limits are met for the given upper current setting.