Shale Directories “Meet a Member” Podcast: Ken Thompson, CEO and President of Mustang Sampling. ShaleDirectories.com is now the #1 online directory covering Appalachian Basin (Marcellus and Utica), Bakken, Eagle Ford, and Permian Basin. The Shale Directories’ management team brings to its members an unequaled depth in internet marketing and advertising focused on the oil and gas industry solely plus best business practices.