Canada and Japan are considering cooperation in critical mineral projects and a potential plan of joint stockpiling of key metals as the two G7 economies look to reduce China’s outsized dominance in the market, Canada’s Minister of International Trade, Maninder Sidhu, told Reuters in an interview published on Friday. “We're offering Japan that avenue to do more with Canada in terms of critical minerals,” said Sidhu, who led a Canadian delegation on a visit to Japan. Japanese and Canadian companies signed more than C$1 billion,…