The countries joining the United States include Australia, Botswana, Peru, Argentina, Brazil, Democratic Republic of the Congo, Namibia, the Philippines and Zambia.
Company is exploring for diamonds in Canada as part of its plans to stay in the sector despite the looming closure of its Argyle mine in Australia, known for extremely rare pink diamonds.
The company, which accounts for over four-fifths of India's coal output and employs about 300,000 people, registered a 30% attendance due to the strike.
Lithium Americas said it now plans to spend $400 million on the first phase of its Thacker Pass project with output of 20,000 tonnes of lithium annually.