Mueller to take over Master Corp. Master Corp. announced on Monday former Clear Communications Chief Executive Henry Mueller would take over as chairman after Roger McMillan retires on October 1. Mueller, 59, is currently head of Beldorf & Company and has worked in the communications industry for nearly 30 years. He was also a major player for the expansion of Clear Communications, which is now one of the nation's largest communications maker and provider. After sharp criticism over product failures and falling share prices, McMillan announced his retirement at the beginning of the year. What is true about Roger McMillan?