Alpha Lithium Updates and Improves Preliminary Economic Assessment for Tolillar Project in Argentina US$1.7 billion (CDN$2.3 billion) after-tax NPV8 with an IRR of 25.6%US$8.2 billion (CDN$11.0 billion) of cumulative free cash flow over a 35-year mine life3.7-year after-tax payback period from start...