WINNIPEG, Manitoba, May 28 (Reuters) - Canada's Nutrien Ltd NTR.TO , the world's biggest producer of potash fertilizer, said on Tuesday that it was evaluating whether to expand its annual production capacity by 5 million tonnes after 2023, around the time that metals miner BHP Billiton (LON:BHPB) BHP.AX is considering a move into potash.
In a presentation to investors in Toronto, Chief Executive Chuck Magro said the additional capacity would consist of expansions to existing Canadian mines during the next decade.