VisionAire Corporation announced an addition to its management team with the appointment of Daniel D Mickelson to the position of president and coo.\rPrior to joining VisionAire, Mickelson was chairman of Aerofil Technology Inc, and served as senior vp, engineering and operations services at Rhône Poulenc Inc. He also spent 30 years in various positions with the Monsanto Company. He graduated from Northwestern University with a bachelor of science degree in chemical engineering.\r"I am extremely pleased to be joining VisionAire at a time when the company is poised for great things," said Mickelson.