Zinc 

• Complete view of GHG emissions associated with the production of zinc, from the perspective of both mines and smelters
• Like-for-like comparison of assets through carefully defined supply chain system boundaries
• Allocation of emissions according to equity ownership of asset, including emissions for minority shareholdings which are often excluded from company sustainability reports 
• When combined with Skarn's industry leading lead mines and lead smelter products, Skarn clients can now access emissions data on the zinc/lead supply chain in unrivalled detail

Emission data is presented as total tonnes of CO₂e and tonnes of CO₂e per tonne of zinc.

For zinc, E₀ and E₁ emissions are defined as: 

E₀: Scope 1 and 2 emissions at mine or smelter site.

E₁: For zinc mines, E₀ plus emissions from concentrate freight and smelting to produce refined zinc.