The CS Project Developing a new source of high quality natural - PowerPoint PPT Presentation

The CS Project – Developing a new source of high quality natural pozzolan in Nevada

CS Project – Location & Logistics Tonopah, Nevada Northern Nevada Northern California UP Rail Head Thorne Nevada CS PROJECT Tonopah Southern Nevada Location: • Adjacent to County maintained road • Adjacent to 120KV power line • 9 miles off Highway 6 • 20 minutes from Tonopah (regional town) Southern California

CS Project – Geology Tuff & Tephra Pozzolan and Perlite (pozzolan) deposits developed during the build up of a 7 million-year-old silicic volcano. 17 May 2019 3

CS Project – Main Zone Pozzolan In the Main Zone large deposits of pozzolan form hills and extend below the level of the plane for at least 150ft Northeast Zone Main Zone Truck for scale 21 February 2019 4 Sunrise Resources plc

Main Zone – Tephra Type Pozzolan Tephra type natural pozzolan Main Zone 17 May 2019 5 Sunrise Resources plc

CS Project - Tuff Zone In the Tuff Zone large deposits of pozzolan extend along the hillside and to depths of at least 200ft in drill holes Tuff Zone Truck for scale

Tuff Zone – Tuff Type Pozzolan Tuff type natural pozzolan Tuff Zone 17 May 2019 7 Sunrise Resources plc

CS Project - Drilling & Trenching • 33 drill holes in Main Zone, Tuff Zone & Northeast Zone • 11 trenches completed in and around Main Zone 2017 drill hole • 2018 drill hole Over 150 composite drill samples submitted for testwork . 2017 trench 1 km 17 May 2019 8 Sunrise Resources plc

CS Testwork – ASTM C618 Commercially Commercially available available CS Average Natural Pozzolan A Natural Pozzolan B Si+Al+Fe Oxide 84.7 81.0 86.2 Meets the SiO2% 70.4 69.2 73.3 Al2O3% 12.5 10.8 12.0 requirements of Fe2O3% 1.9 1.0 0.8 ASTM C618 CaO% 1.5 0.9 1.9 K2O% 4.2 5.08 4.6 Na2O% 3.1 2.13 4.5 SO3% 0.0 0.0 0.3 Over 150 composite drill samples and surface samples have been strength tested at Magmatics Inc. according to the methodology set out in ASTM C618. Samples typically ground to a D50 size of 10-12 micron: Selective mining Commercially Commercially available available Can give higher CS Average Natural Pozzolan A Natural Pozzolan B values 7-day SAI 82% 82% 75% 28-day SAI 91% 93% 91% A mini-bulk sample of the tephra pozzolan has been tested at times up to 12 months with the following result: Sample Type 7 day SAI 28 day SAI 6-month SAI 12-month SAI Continuing strength gain Tephra pozzolan 85% 100% 107% 116% 17 May 2019 9 Sunrise Resources plc

CS Testwork – ASTM C618 & AASHTO M295 Independent Certification Tuff Zone Independent Certification Main Zone 1 km 10

CS Testwork – ASTM C39-96 Concrete cylinders - Compressive strength – Mix design strength 4,000 psi ASTM C39-96 Compressive Strength test Mix design strength = 4000 psi Cement replacement Level Fly ash CS Pozz 15% 15% Strength increase over fly ash Strength at 7 days, (psi) 1,810 2,680 48% Like-for-like 15% replacement Strength at 28 days, (psi) 3,720 4,510 21% CS natural pozzolan outperforms Strength at 56 days, (psi) 4,373 5,060 16% fly ash in concrete test Fly ash CS Pozz 15% 25% Strength increase over fly ash Strength at 7 days, (psi) 1,810 2,035 12% 25% replacement of Strength at 28 days, (psi) 3,720 3,900 5% CS natural pozzolan stronger than Strength at 56 days, (psi) 4,373 4,750 9% 15% replacement with fly ash* 1 km *control using well known fly ash widely used in California 17 May 2019 11 Sunrise Resources plc

Testwork – ASR Mitigation: ASTM C1567 CS Project natural pozzolan is an excellent mitigator of ASR Test results using strongly “reactive” aggregate Main Zone Pozzolan Tuff Zone Pozzolan 1 km 17 May 2019 12 Sunrise Resources plc

CS Testwork – Commercial Grinding Trials ▪ 100t bulk sample ground in production clinker mill to produce a finished ground pozzolan product. ▪ Tested for compliance with ASTM C618. ▪ Scale up from lab results confirmed. 17 May 2019 13 Sunrise Resources plc

CS Project - Mine Planning • Deposits of pozzolan crop out at surface • Open pit mining by dozer and front end loader • Phase 1 Mine Plan - Early low cost production - removal of hills • Low waste/ore ratio • Mining no more than 150ft deep from surface • No water encountered to 180ft in drilling – dry mine Pozzolan Pozzolan 17 May 2019 14 Sunrise Resources plc

Mine Design 17 May 2019 15 Sunrise Resources plc

Mine Design – Permitting Plan of Operations 27-year mine plan includes four-phase pit design targeting production of 14.5 million tons of pozzolan at rates up to 500,000t per year. Tuff Zone Main Zone The Mine Plan does not include the extensive areas of pozzolan in northern Main Zone, Northeast Zone North and western Tuff Zone. 17 May 2019 16 Sunrise Resources plc

CS Project – Mine Permitting Mine permitting on track for completion in 4 th quarter of 2019. • Project is on Federally owned land - Lead regulatory authority is US Bureau of Land Management (BLM). • No biological or cultural impediments to development identified by baseline biological and cultural surveys. • Plan of Operations will allow flexibility on production options and initial 27 year mine life – submitted. • Following shorter Environmental Assessment path rather than longer Environmental Impact Statement .

THANK YOU FOR YOUR ATTENTION Contact: Patrick Cheetham Sunrise Resources plc/ SR Minerals Inc. Tel +44 (0)1625 838884 pat.cheetham@sunriseresourcesplc.com