Old and rough exterior.

Old and rough exterior

During the 33 years that followed the dome’s construction, its coating deteriorated. In those early days, Airforms were removed instead of remaining on the shell, and a coating was applied over the foam to protect it. Monolithic soon learned that coatings do not protect the foam as well as an Airform can and does.

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Posted to An Important Revisit: Monolithic’s First Fertilizer Storage Plant

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Image by Monolithic from Monolithic Commons via Monolithic Dome Institute (CC BY-SA 4.0)