Sierra Metals Inc. reports that the Company's expansion plans are on track at the Bolivar Mine in Mexico. In July 2018 it announced the results of a preliminary economic assessment at Bolivar to achieve a sustainable and staged increase in mine production and mill throughput from 3,000 tonnes per day, to 3,600 TPD in Q1-2019, and to 5,000 TPD by mid-2020. Completion of the expansion included the installation of a refurbished mill, an electrical substation with 1250 KVA of capacity, a secondary crusher and a hydrocyclone cluster that allows for finer grind size optionality that is estimated to provide a 6% increase in copper recoveries from 80% to 86% at Bolivar Mine. The expansion was completed with a world class safety performance with zero lost time incidents and zero accidents reported. The Company used local engineering firms and local qualified contractors and technicians for the expansion project, with Sierra Metals staff conducting most of the supervision.