clues on mineral uptake. As your article indicates, Geoscience BC continues to refine the use of botanical indicators for mineral prospecting. In my introductory geology course at UBC in the 1950s we had the treat of Harry Warren as one of the key contributors to the course. Even at that early date he was recognized as a pioneer in developing analytical methods for using geochemistry and botanical indicators for mineral prospecting. The link below recognizes Harry Warren’s induction into the Mining Hall of Fame. I feel fortunate to have had at least a brief exposure, as a student, to this talented native of Anacortes, Washington.
http://mininghalloffame.ca/inductees/v-z/harry_verney_warren