https://invesbrain.com/sigma-lithium-files-phase-3-technical-report-supporting-the-previously-announced-50-increase-in-total-ni-43-101-mineral-resource-estimate-to-86-million-tonnes/
SIGMA LITHIUM FILES PHASE 3 TECHNICAL REPORT SUPPORTING THE PREVIOUSLY ANNOUNCED ~50% INCREASE IN TOTAL NI 43-101 MINERAL RESOURCE ESTIMATE TO 86 MILLION TONNES