A container for holding product therein during shipment and being returned for reuse has a metal frame, tracks having horizontal and vertical portions attached to opposite sides of the frame, and a plurality of support member assemblies extending between the tracks. The processing then continues by measuring received signal strength of a signal received by the receiver section to produce a 1st received signal strength indication. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. Another step includes excavating the portion of the earth enclosed by the secant pile wall. 5-fluoro-1H-pyrazole-4-carbonyl halides in absence of an acid acceptor. More specifically, this is accomplished by adjusting the impurity concentration of an n\u2212 type offset drain region, which is closest to the gate electrode, to be relatively low and adjusting the impurity concentration of an n type offset drain region, which is distant from the gate electrode, to be relatively high.