Sounds similar to haw it was done hee. Keep in mind these were target assemblies and the reactors were built in the early 50s. Are the candadians still using natural enrichment fuel?
Today I read about a technique for driving off H3 from contaminated soil and concrete. You enclose it and heat it up to ~200 degrees F and bake it for about a weak then sample for H3 to confirm removal. The H3 is released to atmosphere.
We need an off topic monkey,similar to the trunk monkey. Nascar help us. Not,repeat not ,calling you a monkey.