Mary T. Henige, director, social media, broadcast and technology communications, GM

Mary Henige has held a variety of communications positions in her 23 years with General Motors. Currently she is director, social media, broadcast and technology communications. In this position, she works with marketing and leads GM's social media efforts including external blogs, the www.gmreinvention Web site, senior leader Web and Twitter chats, Facebook fan pages, and other social Web activities. Prior to that, she was director, strategic and executive communications since April 2008.

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