This category is within the scope of WikiProject Pennsylvania, a collaborative effort to improve the coverage of Pennsylvania on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PennsylvaniaWikipedia:WikiProject PennsylvaniaTemplate:WikiProject PennsylvaniaPennsylvania articles
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Looks like this is incomplete, for example Kennametal is headquartered in PA. — Preceding unsigned comment added by 71.60.114.251 (talk) 05:04, 25 August 2012 (UTC)[reply]