Kaltura Share to Google Classroom EXPIRES: 6/2/2023 Silica is valuable and important since it is used for many everyday things. But why is it mined in specific areas, like Tunnel City, Wisconsin? Grades: 3 4 5 6 7 8 9 10 11 12 Higher Education Subjects: ScienceEarth ScienceEarth's Natural ResourcesScience and Engineering Practices Collection: Career Explorations!Science, Technology, Engineering, and Mathematics | Career ExplorationsEnvironmental Awareness Series: Into the Outdoors