Sierra Metals Inc.https://pcaobus.org/form-ap-filings/55629/55629Sierra Metals Inc.556294/23/2020 5:02:55 PM201967780940-a53a-414e-bd4c-2ceef7104b81271PricewaterhouseCoopers LLP678249Sierra Metals Inc.1705259SMTS; SMT.0027100060Mariano Ortego00271000601316#^#1128Gaveglio Aparicio y Asociados S. Civil de R.L.#^#PricewaterhouseCoopers, S.C.True