OGA 8: Keynote Address – John Applegath, Range Resources About MDN | Allegheny County | Energy Companies | MDN Resources | Meetings | Pennsylvania | Range Resources Corp | Video May 21, 2014May 20, 2014 Keynote Address: Assessing the Marcellus Shale: What have we learnt in the 10 years since its discovery? John Applegath, Vice President, Southern Marcellus Shale Division, Range Resources Corporation Please Login to view this content. (Not a member? Join Today!) Related