The copper was obtained from traceable sources, and the Eden Project is working with Rio Tinto to explore the possibility of encouraging further traceable supply routes for metals, which would enable users to avoid metals mined unethically.
Grimshaw je razvil geometrijo bakrene-platirane strehe v sodelovanju s kiparjem, Peter Randall-Page, in Mikom Purvisom strukturnih inženirjev SKM Anthony Hunts.