Sierra Metals Inc. reaffirmed production guidance for the year 2021. In August 2021, the Company revised its annual production guidance to 110 million to 115 million copper equivalent pounds, using the following budgeted metal prices: $25.15/oz Ag, $3.12/lb Cu, $1.09/lb Zn, $0.90/lb Pb and $1,936/oz Au. For direct comparison, the 9-month copper equivalent production calculated at same metal prices is 82 million pounds . As such, the anticipated annual production is expected to be in the guidance range.