The company said it was working with local authorities to find the cause of the incident.

Sherritt in April reported the death of an employee at the mine due to a vehicle-related accident.

Moa JV is a 50/50 partnership between Sherritt and General Nickel Co SA, which mines and processes nickel laterite deposits in Cuba.

(Reporting by Sourasis Bose in Bengaluru; Editing by Shounak Dasgupta)