St Barbara : Quarterly production profile revised

ASX Release / 18 September 2020

Quarterly production profile revised

St Barbara Ltd (ASX: SBM) ("St Barbara") advises that a recent fall of ground at the Company's Gwalia mine at Leonora in Western Australia temporarily interrupted production. This will impact the Q1 September FY21 result, but the shortfall is anticipated to be recovered in Q2 December FY21.

It is estimated that approximately 8,000 ounces slated for production in Q1 FY21 will now be delivered as part of Q2 FY21 production.

Full year production guidance for FY21 for Gwalia is maintained at between 175,000 to 190,000 ounces.

The fall of ground occurred at the Gwalia underground mine on 8 September 2020, after a large firing triggered a number of seismic events. The largest seismic event measured +1.9 ML (local magnitude). No personnel were underground at the time. The fall of ground was identified upon re-entry and had occurred in the Hoover Decline at approximately 1600 metres below surface (mbs), and was estimated to contain approximately 11 cubic metres (~30 tonnes) of material.

The event was reported to the appropriate authorities and all work at depth was suspended pending assessment of the seismic information. The geotechnical risk is well understood and closely monitored. Investigation and rectification work took longer than initially anticipated, as although the longest dimension of the fall of ground was 3 metres, ultimately a total of 30 metres lateral rehabilitation was required. The decline has reopened and mining activity has resumed below this level.

Further commentary on operations will be provided in the Q1 September FY21 quarterly report scheduled to be released on 21 October 2020. The revised consolidated quarterly production guidance profile (incorporating Atlantic, Gwalia and Simberi) is below:

FY21 Consoldiated Production

(Atlantic, Gwalia, Simberi)

Indicative Quarterly Guidance Profile

	24%	26%	29%
20%
(-2%)	(+2%)
FY21	FY21	FY21	FY21
Q1 Sep	Q2 Dec	Q3 Mar	Q4 Jun

Indicative % of annual production (koz)

Figures rounded to nearest percent and may not add due to rounding.

Investor Relations	Mr David Cotterell	Manager Investor Relations	[phone]	ASX: SBM
Media Relations	Mr Ben Wilson	GRACosway	[phone]	ADR: STBMY
Authorised by	Mr Rowan Cole	Company Secretary

St Barbara Limited	Level 10, 432 St Kilda Road, Melbourne VIC 3004	T [phone] F [phone]
ACN 009 165 066	Locked Bag 9, Collins Street East, Melbourne VIC 8003	W www.stbarbara.com.au