Earlier this Fall, the Gr. 4-8 classes visited the Rheinsalinen (Salt Works) in Ribourg, just outside of Basel, Switzerland. Here, salt has been extracted from underground deposits since the mid 1800's by pumping water below ground, and then retrieving and processing the salt water which is extracted. Table salt, pharmaceutical salt, and road salt are all produced here. When we visited, the road salt storage dome was packed full, awaiting a snowy winter, when salt will be applied to roads all over this part of Europe.
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