Determining Mineral Reserves Activity Source: Minerals Education Coalition. This activity was adapted with permission from theOhio Mining & Mineral Education Program (OMMEP) of the Ohio Aggregates & Industrial Minerals Association (OAIMA) in partnership with Wright State University. Common things we use every day, like roads, sidewalks, schools, hospitals and homes ─ to name just a few ─ are made up of rocks and minerals. As a resource, they are called mineral reserves and include materials like sand, gravel, limestone, granite, and other aggregate and construction materials. [Read More]