Seven mining companies submitted a proposal to the Mines Ministry insisting that the government reinsert a stability clause, contained in the 2002 code.
Australia's Lithium Power International and Canada's Bearing Lithium have sued Chile to block state-run Codelco from exploiting a lithium deposit where both have claims.
Chinese companies continue to aggressively try securing steady supply of lithium, a key ingredient in the making of batteries that power electric cars.
