DENVER--(BUSINESS WIRE)--May. 17, 2012--
MarkWest Energy Partners, L.P. (NYSE: MWE) announced today that Frank
Semple, Chairman, President and CEO, will present at the National
Association of Publicly Traded Partnerships (NAPTP) 2012 Master Limited
Partnership Investor Conference at 4:30 p.m. Eastern Time on Wednesday,
May 23, 2012, at the Hyatt Regency Greenwich in Old Greenwich,
Connecticut.
Interested parties can listen to a live webcast of the presentation and
download the related presentation materials by visiting the company’s
website at www.markwest.com
under "Investor Relations / Presentations.” A replay of the webcast will
be archived on the site shortly after the presentation has concluded and
will be available for 30 days.
MarkWest Energy Partners, L.P. is a master limited partnership
engaged in the gathering, transportation, and processing of natural gas;
the transportation, fractionation, marketing, and storage of natural gas
liquids; and the gathering and transportation of crude oil. MarkWest has
extensive natural gas gathering, processing, and transmission operations
in the southwest, Gulf Coast, and northeast regions of the United
States, including the Marcellus Shale, and is the largest natural gas
processor and fractionator in the Appalachian region.
This press release includes “forward-looking statements.” All
statements other than statements of historical facts included or
incorporated herein may constitute forward-looking statements. Actual
results could vary significantly from those expressed or implied in such
statements and are subject to a number of risks and uncertainties.
Although MarkWest believes that the expectations reflected in the
forward-looking statements are reasonable, MarkWest can give no
assurance that such expectations will prove to be correct. The
forward-looking statements involve risks and uncertainties that affect
its operations, financial performance, and other factors as discussed in
MarkWest’s filings with the Securities and Exchange Commission. Among
the factors that could cause results to differ materially are those
risks discussed in the periodic reports filed with the SEC, including
MarkWest’s Annual Report on Form 10-K for the year ended December 31,
2011, and its Quarterly Report on Form 10-Q for the quarter ended March
31, 2012. You are urged to carefully review and consider the cautionary
statements and other disclosures made in those filings, specifically
those under the heading “Risk Factors.” MarkWest does not
undertake any duty to update any forward-looking statement except as
required by law.

Source: MarkWest Energy Partners, L.P.
MarkWest Energy Partners, L.P.
Frank Semple, 866-858-0482
Chairman,
President & CEO
or
Nancy Buese, 866-858-0482
Senior
VP and CFO
or
Josh Hallenbeck, 866-858-0482
VP
of Finance & Treasurer
investorrelations@markwest.com