Embodiments described herein provide an MAMR head structure which provides a magnetic recording device equipped with a high density recording magnetic head. The control circuit conducts assignment of addresses to the SRAM and DRAM, and stores data that must be retained over a long period of time in the SRAM. The engine comprises combustion chambers having a cylinder stroke volume of 0. The heated recycled asphalt product is mixed with the heated virgin material in the selected proportion of recycled asphalt product to virgin material to prepare the asphalt mix product for delivery at the desired temperature. A second solder pad is received in the positioning hole. A degradation detection method for use in the system is also provided.