Murphy Oil Makes Claiborne P. Deming Company Chairman by Luke Jones Posted 3/20/2012 04:21 pm Updated 4 years ago Murphy Oil Corp. of El Dorado advances the appointment of Claiborne P. Deming to chairman of its board of directors, effective immediately. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.