Northern Star Resources : Kalgoorlie Operations Site Visit Presentation

Kalgoorlie Operations Site Visit Presentation

February 2019

Competent person statements and forward looking statements

Competent Persons Statements

The information in this announcement that relates to exploration results, data quality and geological interpretations for the Company's Australian Project areas is based on information compiled by Michael Mulroney, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy and a full-time employee of Northern Star Resources Limited. Mr Mulroney has sufficient experience that is relevant to the styles of mineralisation and type of deposits under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves" for the Company's Project areas. Mr Mulroney consents to the inclusion in this announcement of the matters based on this information in the form and context in which it appears.

Listing Rule 5.23 disclosures

# Listing Rule 5.23 Disclosure: the information is extracted from the report entitled "Australian Operations - Exploration Update" dated 20 December 2018 available atwww.nsrltd.comand www.asx.com. Northern Star confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and, in the case of Mineral Resources or Ore Reserves, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. Northern Star confirms that the form and context in which the Competent Person's findings are presented have not been materially modified from the original market announcement.

## Listing Rule 5.23 Disclosure: the information is extracted from the report entitled "Reserve & Resource Update and Corporate Outlook" dated 2 August 2018 available atwww.nsrltd.comand www.asx.com. Northern Star confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and, in the case of Mineral Resources or Ore Reserves, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. Northern Star confirms that the form and context in which the Competent Person's findings are presented have not been materially modified from the original market announcement.

Forward Looking Statements

Northern Star Resources Limited has prepared this announcement based on information available to it. No representation or warranty, express or implied, is made as to the fairness, accuracy, completeness or correctness of the information, opinions and conclusions contained in this announcement. To the maximum extent permitted by law, none of Northern Star Resources Limited, its directors, employees or agents, advisers, nor any other person accepts any liability, including, without limitation, any liability arising from fault or negligence on the part of any of them or any other person, for any loss arising from the use of this announcement or its contents or otherwise arising regarding it. This announcement is not an offer, invitation, solicitation or other recommendation with respect to the subscription for, purchase or sale of any security, and neither this announcement nor anything in it shall form the basis of any contract or commitment whatsoever. This announcement may contain forward looking statements that are subject to risk factors associated with gold exploration, mining and production businesses. It is believed that the expectations reflected in these statements are reasonable but they may be affected by a variety of variables and changes in underlying assumptions which could cause actual results or trends to differ materially, including but not limited to price fluctuations, actual demand, currency fluctuations, drilling and production results, Reserve estimations, loss of market, industry competition, environmental risks, physical risks, legislative, fiscal and regulatory changes, economic and financial market conditions in various countries and regions, political risks, project delay or advancement, approvals and cost estimates.

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KALGOORLIE OPERATIONS

MINING OVERVIEW

Northern Star Kalgoorlie Operations

Operational Profile

5 Operating UG Mines

• ▪ Kanowna Belle

• ▪ Millennium

• ▪ HBJ

• ▪ Raleigh (51% NST)

• ▪ Rubicon-Hornet-Pegasus (51% NST)

• ▪ 2 Processing Facilities

  • ▪ Kanowna Belle - 2Mtpa

  • ▪ Jubilee - 1.2Mtpa

Kanowna Belle Underground