The risks stemming from the raw materials to be treated at the plant need to be addressed, the document said. The Swiss miner said in May that it wanted to develop a recycling hub for electric vehicle (EV) batteries with Canada's Li-Cycle and filed a request for approval for a pilot plant to be based on Sardinia. Sardinia's government last month rejected the request for a fast-track approval process, prompting Glencore to say the two groups might look at alternative locations outside Italy.