Back to the resource library Earthworks’ IRS Letter of Determination September 28, 2015 Download Certification of 501(c)3 status See All Related Resources Earthworks 2024 Impact Report Protecting Our Land, Water, and Culture: How to Use Mineral Withdrawals to Safeguard Public Lands from Mining Letter to the Australian Stock Exchange on CleanTech Lithium FACTSHEET: Increasing U.S. Crude Oil Export Capacity via Deepwater Ports Would Continue Harming Communities and the Climate