An 8 cm tall, glass, sample container holding about 60 ml of heavy water (D2O). This artifact was used by Malcolm Harvey of the Chalk River Laboratories as an exhibit in his public talks about the Sudbury Neutrino Observatory (SNO) to various community and school groups. Although Malcolm, who at that time was Division Director, Physics, did not directly participate in the SNO project, he was a keen promotor of the experiment. The SNO experiment required 1000 tonnes of highly- purified D2O, which it was able to obtain on loan from AECL. Reactions between neutrinos and the heavy water showed that exchanges in neutrino “flavour” occur and helped solve the problems associated with “missing neutrinos”.
