I have 36 years of experience and specialize in the field of CO2 cryogenic gases with specific knowledge in the areas of technology, applicatons, contracts, markets and production, purity and safety. I have published on such topics as CO2 recovery, production, purity, flue gas recovery and CO2 from ethanol. I have testified on cryogenic gas markets, production, process, business, contracts and CO2 applications from biofuels.