A lighted sign for application to a vehicle surface includes first and second metallic layers with a magnetic plate sandwiched therebetween. The invention utilizes within a container substructure a filter employing a combination of specially selected filtration and ion exchange media and a structural design of equipment for substantially or totally providing andor rendering Class A waste forms and preventing the formation of Class B, C and GTCC waste forms. A service logic database at a Service Control Point stores second authorization level required to complete the call. The system when installed in an enclosure prevents sideward, frontward and damaging upward movements of the batteries in response to seismic events. ,, which are independent of initial realization, are linearly combined at each iteration, by applying constraints to the linear combination coefficients of realizations and i=1,. The beam current is measured at turnaround points off the substrate and the current value is used to control the subsequent fast scan speed so as to compensate for the effect of any variation in beam current on dose uniformity in the slow scan direction.