dillon milton went to them and said we can help you. was able to obtain documents around essentially their sales pitch since i worked at the energy department was was the primary user roundy anna. essentially hill and knolton described how they were successfully able to help not just the tobacco industry but in their literature they never mention tobacco because it already was so tainted that how they help other industries and they put out a series of case studies which i posted as well. this was around fluorocarbons or free on as the this battle-- that are none dominik you will recall there were signs them in the 1970's suggesting that the release of fluorocarbons which were in come essentially used in as a propellant in aerosol cans, was causing a hole in the ozone layer. additional studies confirmed this and is hill in olden explain, public concern and fear about the future cause of fluorocarbon users to look to alternatives. there were as by dupont to help calm fears coming and the net to two or three years before the government too