Back to the resource library Photos of open pit mines February 10, 2005 Bingham Canyon mine, Utah — the largest open pit mine in North America. Credit: Earthworks Barrick Goldstrike mine, Nevada — in the Carlin trend. Credit: Earthworks Construction of a cyanide heap leach pad at the Crowfoot/Hycroft mine in Nevada. Credit: Earthworks See All Related Resources Protecting Our Land, Water, and Culture: How to Use Mineral Withdrawals to Safeguard Public Lands from Mining Earthworks 2023 Annual Report Comments on Texas’s implementation of EPA’s Emissions Guidelines, 40 CFR Part 60, Subpart OOOOc, for existing crude oil and natural gas facilities Comments to Colorado’s Energy and Carbon Management Commission on Produced Water