Evans pivots to Cesium Another interesting comment made by Evans got my attention. He referred to pollucite in his comments and just how rare of an occurrence it is. I went back and checked all his comments on Case Lake and he has never referred to pollucite. My guess is Biens has uncovered a large at surface body of Pollucite on West Joe. This might explain why he pushed the Cesium story on Case lake in his news release when previously he only spoke of the cesium as a kicker.