Diagnostic column leach testing on Woolrich material returned 443–546ppm soluble TREO and defined optimal low-acidity base-case conditions for further testing.

Axel REE Leach Test Work Confirms ISR Performance of Caladão Rare Earths MaterialAxel REE's Caladão ISR tests validate in-situ recovery with magnesium sulphate leach; early PLS breakthrough confirms column leach viability at Woolrich.https://smallcaps.com.au/article/axel-ree-leach-test-work-confirms-isr-performance-of-caladao-rare-earths-material