Michael John DeMuth, 63, of Old Whitmire Highway, Newberry, SC, formerly of Ellicott City, MD, died Friday, February 3, 2012 at his residence. He was born December 22, 1948 in Baltimore City, MD a son of Albert and Jean Jacobi DeMuth. Mike was the owner of Aymar-DeMuth Propellers and spent more that 25 years crafting airplane propellers that have been shipped all over the world. He was also a Journeyman Machinist who worked at General Electric, Westinghouse, and in the Applied Physics Lab at Johns Hopkins University where he was part of the team that built one of the first satellites to be launched into space from the spaceship. Mike was an extremely talented man but a man, who despite all of these gifts remained very humble. In addition to his parents of Ellicott City, MD, he is survived by his brothers, Paul DeMuth of Ellicott City, MD and Donald (Nancy) DeMuth of Irmo, SC; sister, Carol (Larry) Gray of Union Bridge, MD; nieces, Laura, Virginia, Jami, and Jessi; two great-nieces and a great-nephew. Funeral mass will be celebrated Monday 10 a.m. at Church of the Resurrection . Online condolences may be sent to the family at www.whitakerfuneralhome.com adn aslo www.slackfuneralhome.com.