"Operations". minsur.com. 2014. Archived from the original on 2016-04-26. Retrieved 2015-03-08. https://web.archive.org/web/20160426211325/http://www.minsur.com/Paginas/inicio.aspx?lang=en
"USD 450 million bond". digiscend.com. 2014. Retrieved 2015-03-08. https://digiscend.com/en/projects/peru/san-rafael-tin-mine/snapshot
"USD 450 million bond use of proceeds" (PDF). minsur.com. 2014. Archived from the original (PDF) on 2015-04-02. Retrieved 2015-03-08. https://web.archive.org/web/20150402102510/http://www.minsur.com/SiteAssets/pdf/Reportes/ESP/Minsur%201T14_SPA_FINAL.pdf