DENVER--(BUSINESS WIRE)--May. 1, 2012--
MarkWest Energy Partners, L.P. (NYSE:MWE) announced today that its 2012
Annual Meeting of Common Unitholders will be held on Friday, June 1,
2011, at 9:00 a.m. Eastern time at the Jumeirah Essex House located at
160 Central Park South in New York.
The record date for determination of unitholders entitled to vote at the
meeting was April 4, 2012. Additional information, including details of
the business to be conducted at the annual meeting, is included in
MarkWest’s Notice of Annual Meeting and Proxy Statement, which was filed
with the Securities and Exchange Commission. MarkWest’s 2012 Notice of
Annual Meeting and Proxy Statement and 2011 Annual Report on Form 10-K
may be accessed through the MarkWest website under “Investor Relations /
Annual Reports & Proxy.”
In addition, MarkWest will host an Investor and Analyst Conference on
Friday, June 1, 2012, at 9:15 a.m. Eastern time at the Jumeirah Essex
House. To attend the conference, please RSVP before May 25, 2012, to investorrelations@markwest.com.
To listen to a live audio webcast of and to view the related
presentation materials for the Investor and Analyst Conference, visit
MarkWest’s website under “Investor Relations / Presentations &
Webcasts.” A replay of the presentation will also be available on the
website.
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
operations, financial performance, and other factors as discussed in
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. 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
or
E-mail: investorrelations@markwest.com