Good article on the meaning of "collapse" in property damage policies (national scope)

I posted here and here on the Massachusetts interpretation of "collapse," which is generally an undefined term in property damage policies. Massachusetts takes the narrow view that coverage is limited to the actual falling down of a covered structure.

Here's an interesting article, Insurance Coverage for Collapse - How Has It Changed and Why? in Adjusting Today, a publication of Adjusters International, Inc., a public adjusting company. The article covers the history and interpretation of "collapse" nationally.