MarkWest Energy Partners Announces 2015 Annual Meeting of Common Unitholders and Investor Conference

DENVER--(BUSINESS WIRE)--MarkWest Energy Partners, L.P. (NYSE: MWE) (“MarkWest” and “the Partnership”) announced today that its 2015 Annual Meeting of Common Unitholders will be held on Wednesday, June 3, 2015, at 2:00 p.m. Mountain Time at the Partnership’s corporate headquarters, located at 1515 Arapahoe Street, Tower 1, Suite 1600, Denver, Colorado, 80202.