PRAIRIE LITHIUM LIMITED — Director's Dealing 2019

Aug 20, 2019

Rule 3.19A.2

Appendix 3Y

Change of Director's Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX's property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	Hawskstone Mining Limited
ABN	15 008 720 223

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Barnaby Egerton-Warburton
Date of last notice	15 August 2019

Part 1 - Change of director's relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of "notifiable interest of a director" should be disclosed in this part.

Direct or indirect interest	Indirect
Nature of indirect interest(including registered holder)Note: Provide details of the circumstances giving rise to the relevantinterest.	WhistlerStreetPtyLtd<e-wSuperannuation Fund A/C>-Mr EgertonWarburton is a director</e-w
Date of change	20August 2019
No. of securities held prior to change
BXW Ventures Pty Ltd	•7,750,000 unquoted options exercisableat $0.06 and expiring 30/12/21•4,000,000 unquoted options exercisableat $0.07 and expiring 30/12/21
WhistlerStreetPtyLtd<warburtonDiscretionary A/C></warburton	•600,000 ordinary fully paid shares
WhistlerStreetPtyLtd<e-wSuperannuation FundA/C></e-w	•2,880,000 ordinary shares
Class	Ordinary Fully Paid Shares

+ See chapter 19 for defined terms.

Number acquired
WhistlerStreetPtyLtd<e-w< td="">1,090,000</e-w<>	1,090,000
Superannuation Fund A/C>
Number disposed	Nil
Value/ConsiderationNote: If consideration is non-cash, provide details and estimatedvaluation	$14,170
No. of securities held after change
BXW Ventures Pty Ltd	•7,750,000 unquoted options exercisableat $0.06 and expiring 30/12/21
	•4,000,000 unquoted options exercisableat $0.07 and expiring 30/12/21
WhistlerStreetPtyLtd<warburton< td="">•600,000 ordinary fully paid shares</warburton<>	•600,000 ordinary fully paid shares
Discretionary A/C>
WhistlerStreetPtyLtd<e-w< td="">•3,970,000 ordinary shares</e-w<>	•3,970,000 ordinary shares
Superannuation FundA/C>
Nature of changeExample: on-market trade, off-market trade, exercise of options,issue of securities under dividend reinvestment plan, participation inbuy-back	On-market trades

Part 2 – Change of director's interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of "notifiable interest of a director" should be disclosed in this part.

Detail of contract	N/A
Nature of interest	N/A
Name of registered holder(if issued securities)	N/A
Date of change	N/A
No. and class of securities to whichinterest related prior to changeNote: Details are only required for a contract inrelation to which the interest has changed	N/A
Interest acquired	N/A

+ See chapter 19 for defined terms.

Interest disposed	N/A
Value/ConsiderationNote: If consideration is non-cash, provide detailsand an estimated valuation	N/A
Interest after change	N/A

Part 3 – +Closed period

Were the interests in the securities or contracts detailed	No
above traded during a +closed periodwhere prior written
clearance was required?
If so, was prior written clearance provided to allow the tradeto proceed during this period?	N/A
If prior written clearance was provided, on what date was thisprovided?	N/A

+ See chapter 19 for defined terms.