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This one just doesn’t meet the “acid test” of insurance contract interpretation, pun intended. Sulfuric acid and the commercial property policy’s rust or wear and tear exclusion is the subject. It’s funny how what seems clear and simple almost never is. That’s why there are mechanics (in every field).

A business with chemicals stored in tanks had a tank valve crack, either because it became rusty or just plain worn. Sulfuric acid spewed onto the insured’s property.

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