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SIGMA LITHIUM INCREASES PROVEN & PROBABLE OPEN PIT MINERAL RESERVE BY 40% TO 77Mt EXTENDING OPERATIONS TO 25 YEARS [Yahoo! Finance]

Sigma Lithium Corporation  (SGML) 
PDF The entirety of this mineral Reserve balance is feasible through low-cost, open pit, mining operations, consolidating the Company 's position as a low-cost producer of [Read more]