He was the president of the Mineralogical Association of Canada ( MAC ) from 1973 to 1975 .
From 1968 to 1969 , he was a senior research fellow of the National Research Council of Canada .
research fellow was the research fellow of the Mineralogical Association of Canada ( MAC ) from 1973 to 1975 .
From 1968 to 1969 , he was a senior research fellow of the National Research Council of Canada .