Ann: October Investor Update, page-2

some info found in this presentation that might providing some missing links to the scoping study:

* Targeting mining and concentrate production Q1 2018

* Low capital requirements, fast payback and short lead time to production

* Current plant is pilot scale – can be upgraded to 300tpd (110,000tpa) but a larger full scale operation requires a new concentrator.

* Plant upgrade Estimated low capex to upgrade current plant – SRK Report.

* (old info) Upgradeable to 200 tpd (75,000 tpa) – SRK due diligence report (US$1M)

* +90% recoveries to concentrate

* Existing plant onsite – Targeting: ~110ktpa for 20Kt of Zn concentrate pa

* The metallurgical testwork indicates thatzinc recoveries of 90% to 95% could be obtained to produce a clean concentrate with contained grades of 55% Zn (from scoping study)

* Estimated ~2020 New Standalone plant: Targeting ~250,000 tpa

* Preliminary discussions with financing and off-take partners underway.

* Operating costs Comparison & estimates suggest opex will be low (tbc).


* Arena can elect to move to 80% of the Plomosas Project for an additional A$750,000 in cash + A$1,700,000 in shares

* other 20% at EV value