Back to the resource library EARTHWORKS’ IRS Letter of Determination May 22, 2008 Download 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