An escapeladder belt and harness assembly having an improved attachment arrangement and adjustment capabilities. In an embodiment, the optical coupling material can be disposed between a photosensor of the radiation detection apparatus and the scintillation member. Methods for the preparation of the elastomer composition are also disclosed. If the requested process file does not relate to the selected process, the user is provided with access to the file. In an embodiment, the hardware based failure protection mechanism provides failure protection on a single switch module.