Experts Piece Together A Jigsaw Puzzle of Broken Gypsum at Mammoth Cave National Park
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Piecing together a Jigsaw puzzle is challenging even when you have a picture to guide you. Imagine the challenge Jim Werker and Val Hildreth-Werker faced when they were confronted by 600 pounds of fragile gypsum pieces that they were tasked with putting back in place in a passageway in Mammoth Cave National Park's Crystal Cave.
- By Kurt Repanshek - February 10th, 2010 3:48am