Peru's copper output could hit a record 2.5-million tonnes in 2021, well over the 2.15-million tonnes produced last year, Energy and Mines Minister Jaime Gálvez said on Tuesday. Gálvez said recent mine expansions would help the world's No. 2 copper producer boost output, as well as the opening in April or May of the $1.6 billion Minas Justa project, owned by Minsur.  "This will compensate for the problems that still exist in the copper indus...