Mike Yoh is president of Day & Zimmermann's Munitions and Government business.

Mike has held a number of increasingly responsible technical and management positions throughout Day & Zimmermann since joining the company fulltime in 1985, including assignments in engineering, operations, production, business development, quality improvement CBA negotiations and contract negotiation and management.

Mike serves in many capacities on outside boards. He is president and a member of the executive board of directors of the Munitions Industrial Base Task Force (MIBTF), former member of the Industrial Committee of Ammunition Producers (ICAP) and past member of the board of directors of the National Defense Industrial Association's (NDIA) Delaware Valley Chapter. At Duke University he is a member of the Pratt School of Engineering Board of Visitors. He is also a past member of the Executive Committee of the Annual Fund, past president of the Duke University Engineering Alumni Council, and past member of the Duke Alumni Committee. Mike is a member of the leadership committee of the Boy Scouts of America’s Sea Base High Adventure Camp and is a former Vice Chair of the Boy Scouts of America’s Cradle of Liberty Council. He is senior warden of All Saints’ Wynnewood Church and was a member of the board of the former Anglican Foundation of Philadelphia.

Mike holds a bachelor of science in Engineering from Duke University