BELGRADE, Mont., July 1, 2014 (GLOBE NEWSWIRE) -- Bacterin International Holdings, Inc. (NYSE MKT:BONE), a leader in the development of revolutionary bone graft material and coatings for medical applications, is pleased to announce the addition of Robert (Bob) Di Silvio as President of the Company. Mr. Di Silvio brings over 30 years' experience serving in executive management positions in the medical industry, overseeing sales and marketing efforts in the management of medical sales operations.