https://www.alcoa.com/australia/en/pdf/Alcoa-of-Australia-Ltd-Tax-Transparency-Report-https://www.alcoa.com/australia/en/sustainability/reports-publications https://www.alcoa.com/australia/en/sustainability/reports-publications https://www.alcoa.com/australia/en/pdf/Alcoa-of-Australia-Ltd-Tax-Transparency-Report-2018.pdf https://www.alcoa.com/australia/en/pdf/Alcoa-of-Australia-Ltd-Tax-Transparency-Report-2018.pdf Ecovadis supplier assessment criteria Alcoa engages Trace International to conduct a separate due-diligence program and further manage its supply chain risks related to anti-bribery and corruption, trade compliance, child and slave labour, criminal history, human trafficking and conflict minerals.