Efficient removal of mercury from the exhaust gases of an industrial process or combustion process can be achieved using an adsorbent that can be regenerated by a simple and efficient method. An electrical contact may have a contact portion, an insert portion and a position portion therebetween. The damping structure includes a first buffer and a holding member located on the fan frame. In some embodiments a domain includes programmable switches that are configured to connect a routing line of one domain to any routing line of the other domains. This reduces the amount of programming time, the number of programming states traversed, and the power consumed in programming the memory cell with the data field. According to this invention, the drawn size of via holes in a design layout is selected based on its adjacent geometry objects.