Glenn Hux, mineral assistant at the Mercer County Library, gives a mineral presentation to 21 third graders from the Immaculate Conception School. The students, along with their teacher, Judy Hellwarth enjoyed learning about the minerals. After the presentation, the students were invited to look at over 900 minerals donated by Ron and Ruth Langsdon. Mineral presentations for the spring and summer are filling up fast. Anyone interested in scheduling a presentation should call 419-586-1207 or e-mail www.LangsdonMinerals.org.