Bennett who owned an 80 percent stake , sold Atlas to private equity company HgCapital in 2007 .
Bennett who owned an 80 percent stake , left the business in 2009 establishing Enerco Group , an entrepreneurial investment company focused on oil and gas technology businesses .
Bennett who owned an 80 percent stake , sold Atlas to private equity company HgCapital in 2007 and left the business in 2009 establishing Enerco Group , an entrepreneurial investment company focused on oil and gas technology businesses .