Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 1. Stop removing schist and low grade limestone Will stop extraction of high grade limestone Stop supply to PSP/customers & all glass plants (OI/ABC/Amcor) Cease most operations at mine

Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 2. Remove schist off site/sell as land fill & continue to sell low grade limestone to civil applications Reduce storage space demand on site Smaller overburden mounds Not economically viable due to transport cost No approved site Land fill subject to government contract

Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 3. Store schist where low grade limestone is held in inventory (eastern mound) for crushing into civil products Space available only after crushing & sale – limited space. Sterilise inventory Insufficient space Reduced high grade limestone extraction Write off inventory

Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 4. Store schist on top of eastern mound Limited to 50 – 100k mt to RL 432 Insufficient space Visual impact Wardens court restrictions Currently rounding off final form to top Community concern with height

Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 5. Complete partial pit final form stage at south or north end & place schist in pit Sterilise ore reserves Operations restricted due to ability to store water in pit between north & south Further development of ore reserves not possible Cannot be done until PC1 (crusher) is relocated 2+ years

Penrice – CCG Meeting Overburden Options OptionImpactEffectComment 6. Underground mining of high grade ore body Limits overburden removal Time restricted – 24 months planning & implementation Stop supply to PSP/Customers Not economical No expertise Not worked up as serious option

Penrice – CCG Meeting OptionImpactEffectComment 7. Place schist on Gerlach western land Provides overburden space to continue operations Environmental impacts Overburden Options