Tintaya (Quechua for the cocoon which contains the chrysalis of the moth) [1] is a Peruvian copper mine. It was owned by the Swiss corporation Xstrata (now merged with Glencore). The mine is located in the Cusco Region, Espinar Province, Yauri District, southeast of Yauri. [2] [3] The ore processing rate is at 5,404,000 tons per year and the construction phase of the mine asked for US$368 millions investment. SNC, of Montreal, Canada, was hired for feasibility and EPCM for the mine. [4]