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Our 2024 show will be held at

 Machinists Hall Auditorium
12365 St. Charles Rock (Bridgeton) 
 St. Louis County, MO


Friday, August 16, 2024
 3:00 pm - 8:00 pm
Saturday, August 17, 2024
 10:00 am - 6:00 pm

Sunday, August 18, 2024
 11:00 am - 5:00 pm


Show Activities 




Special Exhibits & Programs

Show Flyer

Photos from past Shows 

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Donations Needed for Scholarship Fund - Monday, February 19, 2024

Donations of rock-related materials to our show's boutique are welcome & needed! Funds raised will support our scholarship fund. Send us a note at if you have something to donate.

Our scholarship fund helps college students take earth science-related classes. We've got over $1,500 available this year.

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