Mark Duff - Perma-Fix Environmental COO, Executive Vice President

Mr. Mark Duff is Chief Operating Officer, Executive Vice President of the Company, since September 30, 2016. Mr. Duff was hired as an EVP of the Company effective June 13, 2016, to support and help accelerate anticipated revenue growth and profitability. Mr. Duff has 30 years of management and technical experience in the Department of Energy and Department of Defense environmental and construction markets as a corporate officer, senior project manager, cofounder of a consulting firm, and federal employee. During his work in government service, Mr. Duff was responsible for the successful completion of over 70 performancebased projects at the Paducah Gaseous Diffusion Plant in Paducah, KY. At the PGDP, he served as the Project Manager for the Paducah Remediation Contract which was a fiveyear project with a total value of 458 million. Prior to the PGDP project, Mr. Duff was a senior manager supporting Babcock and Wilcox leading several programs that included building teams to solve complex technical problems. These programs included implementation of the American Recovery and Reinvestment Act at the DOE Y12 facility with a 245 million budget for new cleanup projects completed over a two year period. During this period, Mr. Duff served as project manager leading a team of senior experts in support of Toshiba Corporation in Tokyo, Japan to integrate United States technology in the recovery of the Fukushima Daiichi Nuclear Reactor disaster. This project included arriving in Japan within three weeks after the earthquake to coordinate technologies associated with water treatment, radiation protection, and shielding. Prior to joining BW, Mr. Duff served as the president of Safety and Ecology Corporation . As President of SEC since 2016.