Bluestone Energy will be participating in the Energy Efficiency Expo in Chicago, and their presence is noted by Green TMC.net. From the article: Bluestone Energy Services, a division of OpTerra Energy, announced that it will be exhibiting as a gold sponsor at the Energy Efficiency Expo Tuesday, Sept. 10, from 7 a.m. to 4 p.m. at the Donald Stephens Convention Center, 9301 Bryn Mawr Ave., Rosemont, Ill. In a release, the Company noted that the […]

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