Gold, silver, tin and molybdenum production also rose.
A court ordered suspension of the administrative process for the Ñuble hospital following a request from the firm Astaldi, who had its bid rejected during the tender.
The supreme court has prohibited Rio de Janeiro's state government from obtaining loans from state-run banks by using water utility Cedae as a guarantee.
Works on the Posorja port will be executed in two phases, with the first entailing the installation of a 400m pier and a 27 hectare land terminal with capacity for 750,000 TEU's.
The water utility says a price increase of more than 10% is necessary for its investment program.
Peru's government hopes it will be third time lucky for its long delayed Michiquillay copper project, as the state investment promotion agency officially called a bid round.
The government is seeking to halt the dumping of provincial cities' raw sewage into water sources.