Critical Minerals Search Activity Source: Minerals Education Coalition Grade Level: 6-12 Materials Device with internet access. Copy of this activity with Worksheet and a pen or pencil. Introduction There is concern over the large quantity of mineral commodities crucial to defense, medicine, and technology that must be imported by the United States (U.S.) each year. The U.S. faces three key challenges in securing mineral commodities: obtaining mining permits, managing supply chain disruption, and navigating restrictions on imports and exports. [Read More]