Presolicitation notice from the Department of Defense's Defense Advanced Research Projects Agency (DARPA) is seeking innovative approaches to address challenges in the critical material supply chain diversity for national security. The notice focuses on metals and rare earth minerals pricing, input costs to extraction and refining, supply and demand curve estimation and forecasting, quantitative industrial organization, game theory, and mechanism design, time series machine learning methods, and deployment of machine learning models. The proposed research should investigate innovative approaches that enable revolutionary advances in science, economics, and/or systems.