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Quarterly Report / Q3 March FY21 ( 3 months to 31 March 2021 ) St Barbara LIMITED • Highlights Q3 March FY211 Record production in March ; Company - wide transformation unlocks value Safety TRIFR² safety performance was 3.7 ( 31 December 2020 : 3.3 ) , with corresponding LTIFR.³ of 0.39 ( 31 December 2020 : 0.39 ) The COVID - 19 situation in Papua New Guinea deteriorated during the quarter , with a significant increase in community transmissions . Simberi has continued to implement St Barbara's COVID - 19 protocols with the support and guidance of external medical specialists and the implementation of additional controls to limit people movements . By the end of March , a number of employees and community members tested positive for COVID - 19 . These employees were isolated in the onsite quarantine camp with containment measures to protect other employees and continue operations . While medical care and support has ensured the recovery of the majority of cases , two employees with pre - existing conditions passed away whilst they had a positive COVID - 19 diagnosis . Delivering St Barbara's strategy As outlined in the Investor Briefing on 15 December 2020 , the near - term focus is on delivering ' Uplift 1 ' of St Barbara's strategy at all operating sites , enabled by the Building Brilliance program . The first five months of this program were focused on structured debottlenecking and setting up each site for improved production and reduced cost . St Barbara delivered its strongest monthly performance of the year in March , which is expected to continue in Q4 Jun FY21 . о Atlantic Operations reported a record milling month of 255 kt , which is a 9 % increase with respect to the FY20 average . Leonora Operations debottlenecked the underground mine and continued to ‘ fill the mill ' . Milling rates in late March increased to nameplate capacity of 1.2 Mtpa , with production of 22,905 ounces during the month ( the highest month of production in FY21 ) . In addition , over 400 development metres has been advanced over consecutive months to support future production . Simberi Operations produced 9 koz in March with significant improvements in mobile fleet productivity . In parallel St Barbara is focused on ' Uplift 2 ' of the strategy which is to grow production from the Leonora Province and deliver brownfield projects in Simberi and Atlantic . ○ As announced on 27 April 2021 , the Board has approved US $ 13 million of pre - investment capital for the Simberi Sulphide Project . This capital expenditure includes metallurgical testing , engineering studies , mining fleet and long - lead items . The final investment decision is unchanged and is targeted for March 2022 . о Review and study work progressed on the Leonora Province Plan , with results to be outlined in detail in the June quarter . Operations • Consolidated gold production of 82,303 ounces ( Q2 Dec FY21 : 89,670 ounces ) . • Consolidated All - In Sustaining Cost ( AISC ) of A $ 1,649 per ounce ( Q2 Dec FY21 : A $ 1,517 per ounce ) To date , due to extraordinary efforts by the Simberi workforce and the corporate support team , the COVID - 19 situation in PNG has continued to maintain a safe operating performance . However , should the situation worsen , this could result in FY21 production being negatively affected and guidance not achieved . 1 This report uses certain Non - IFRS measures as set out on the last page of this report . Unless otherwise noted , information in this report that relates to Mineral Resources or Ore Reserves is extracted from the report titled ' Ore Reserves and Mineral Resources Statements 30 June 2020 ' released to the ASX on 24 August 2020. This report has not been audited . 2 Total Recordable Injury Frequency Rate per million hours worked ( 12 month average ) 3 Lost Time Injury Frequency Rate per million hours worked ( 12 month average ) Investor Relations Media Relations Authorised by St Barbara Limited ACN 009 165 066 Mr David Cotterell Mr Ben Wilson Mr Craig Jetson Manager Investor Relations GRACosway Managing Director & CEO Level 10 , 432 St Kilda Road , Melbourne VIC 3004 Locked Bag 9 , Collins Street East , Melbourne VIC 8003 +61 3 8660 1959 +61 407 966 083 ASX : SBM ADR : STBMY 28 April 2021 T +61 3 8660 1900 F +61 3 8660 1999 W www.stbarbara.com.au