David Hall has been appointed interim president and CEO of EnWave Corp, a Vancouver-based developer of vacuum microwave technology for the food, pharmaceutical, nutraceutical and chemical industries. Hall replaces Steve Langford, who resigned after one year for personal reasons and has returned to Ontario to pursue other business opportunities. Most of Hall's 28 years in the technology sector were spent with SHL Systemhouse. He left the firm in 1999 having most recently served as VP western region. He will continue the firm's focus on commercialization activities as well as seeking new partners for further expansion....