Senior Critical Minerals Expert (On-Call, Part-Time/Hourly/Remote) Are you a critical minerals and materials expert with a deep understanding of the end-to-end supply chain-from mining and mineral processing to manufacturing, recycling, and commercialization? We need you. ICF is seeking an on-call Critical Minerals Expert to support work with the ICF's federal, state, local, and private sector clients. This is a remote, on-call role that provides flexibility to work from zero to 30+ hours per we