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Sigma loses another executive amid sale talks

Exit follows earlier departures of co-chief executive and chief operating officer

Brazilian newsroom*
Sigma's Grota do Cirilo mine in Minas Gerais, Brazil. Source: Sigma Lithium Resources

Sigma's Grota do Cirilo mine in Minas Gerais, Brazil. Source: Sigma Lithium Resources

Another executive has left Sigma Lithium Resources amid negotiations for the sale of part or all of the mining company. Chief controls officer Raphael Dias told Reuters on Friday that he had left the...

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