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Sigma Lithium boosts mineral reserves at Brazil's Grota do Cirilo [Yahoo! Finance]

Sigma Lithium Corporation  (SGML) 
PDF This expansion equates to an additional 22.2mt, raising the consolidated reserve balance to 77mt at 1.40% lithium oxide (Li2O), up from 54.8mt at 1.44% Li2O. The rese [Read more]