He was an expert on soil mechanics and a strong advocate of underground transport systems.
[1] He was born in Monifieth in Angus on 29 June 1905, the son of William Cassie.
He continued as a postgraduate, earning a PhD in 1930 before spending a year in the USA in Illinois.
In 1965, he was appointed Deputy Chairman of the Advisory Council on Road Research under Prof F.E.Jones.
His archive of dance notations were gifted to the Morris Ring in his later life.