Weir, Ian Technical report on the preliminary economic assessment ofthe magistral project, Ancash region, Peru - Toronto Rock solid resources Proven advice 2017 - 233 p. ilus., fotos NI 43-101 Report Subjects--Topical Terms: EVALUACION ECONOMICAMINERALIZACIONYACIMIENTOS MINERALESRECURSOS MINERALESEXPLORACION MINERA Subjects--Geographic Terms: PERUANCASH