A drill stem centralizer andor breakout wrench includes a frame with opposed hydraulic cylinder actuators mounted on the frame and engaged in with jaw support members for movement toward and away from each other for centralizing or breakout of drill stem sections. While making a longitudinal pass over a foam block, the apparatus flattens the foam block, cuts longitudinal kerfs in the foam block, and draws metal studs into the kerfs. After the step of forming the dielectric layer, an implantation is performed to implant an impurity into the substrate to form a deep well region. The case also is perforated by two sets of holes to allow hot air to escape and cool air to enter the display apparatus. The pop-up noise is reduced by the conduction path that is formed when the digital amplifier is powered on or off. A treatment chamber is used to remediate off-gases from an emission source by passing the off-gases through a susceptor matrix, the matrix being exposed to microwave radiation.