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I removed the cleanup tag. I don't think all stubs should be tagged as needing a cleanup. A stub tag should suffice. Epachamo 22:10, 2 August 2006 (UTC) reply

This article was the subject of a Wiki Education Foundation-supported course assignment, between 23 August 2021 and 10 December 2021. Further details are available on the course page. Student editor(s): San264. Peer reviewers: KRose4, Catherinepeshek, Thought22Potato, Hamsquirrel.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT ( talk) 09:08, 17 January 2022 (UTC) reply

There're two articles talking about the same thing, Seismic shadowing and Shadow Zone. They need to be be merged. The Talking Toaster ( talk) 00:08, 8 May 2011 (UTC) reply

I will be editing and adding more sources. Sources can be found in my user's bibliography. San264 ( talk) 16:40, 10 November 2021 (UTC) reply

I added a lot to the existing article inducing a lead, new sections, and more references (removed old references). I could not comfortably find any more images to add. San264 ( talk) 18:16, 10 December 2021 (UTC) reply