MarkWest Hydrocarbon, Inc. Announces Earnings Conference Call

Apr 30, 2001, 01:00 ET from MarkWest Hydrocarbon, Inc.

    DENVER, April 30 /PRNewswire/ -- MarkWest Hydrocarbon, Inc. ("MarkWest")
 (Amex:   MWP), will host a teleconference with securities analysts on Thursday,
 May 3, 2001, at 2:00 p.m. MDT.  The purpose of the call is to review the
 financial results of the first quarter ended March 31, 2001, which are
 scheduled to be released after market hours May 2.  A question and answer
 session will follow remarks by John Fox, Chief Executive Officer; Brian
 O'Neill, Chief Operating Officer; and Gerry Tywoniuk, Chief Financial Officer.
     MarkWest's teleconference with security analysts will be simulcast live
 via MarkWest's Web site, www.markwest.com.  Click on the "Investor Relations"
 tab, then on "Click Here for Details" on the pop-up menu regarding the
 conference call, then on "Live Webcast" under Conference Calls.  A replay of
 the broadcast will be available within one hour of the live call and for the
 next 90 days.
     If listening via the Web, please allow extra time prior to the call to
 visit the site and, if necessary, download the streaming media software
 required (RealPlayer).  If you have any questions, please contact Anita
 Blackman, Investor Relations, at (800) 730-8388.
 
     MarkWest Hydrocarbon, Inc., provides natural gas processing and related
 services through its modern, efficient plant and pipeline systems.  Increased
 drilling for natural gas to meet expanding demand is driving growth for
 MarkWest's specialized services.  Natural gas producers are increasingly
 outsourcing the complex task of converting raw natural gas produced at the
 wellhead to marketable natural gas and natural gas liquids.
 
                     MAKE YOUR OPINION COUNT -  Click Here
                http://tbutton.prnewswire.com/prn/11690X32411463
 
 

SOURCE MarkWest Hydrocarbon, Inc.
    DENVER, April 30 /PRNewswire/ -- MarkWest Hydrocarbon, Inc. ("MarkWest")
 (Amex:   MWP), will host a teleconference with securities analysts on Thursday,
 May 3, 2001, at 2:00 p.m. MDT.  The purpose of the call is to review the
 financial results of the first quarter ended March 31, 2001, which are
 scheduled to be released after market hours May 2.  A question and answer
 session will follow remarks by John Fox, Chief Executive Officer; Brian
 O'Neill, Chief Operating Officer; and Gerry Tywoniuk, Chief Financial Officer.
     MarkWest's teleconference with security analysts will be simulcast live
 via MarkWest's Web site, www.markwest.com.  Click on the "Investor Relations"
 tab, then on "Click Here for Details" on the pop-up menu regarding the
 conference call, then on "Live Webcast" under Conference Calls.  A replay of
 the broadcast will be available within one hour of the live call and for the
 next 90 days.
     If listening via the Web, please allow extra time prior to the call to
 visit the site and, if necessary, download the streaming media software
 required (RealPlayer).  If you have any questions, please contact Anita
 Blackman, Investor Relations, at (800) 730-8388.
 
     MarkWest Hydrocarbon, Inc., provides natural gas processing and related
 services through its modern, efficient plant and pipeline systems.  Increased
 drilling for natural gas to meet expanding demand is driving growth for
 MarkWest's specialized services.  Natural gas producers are increasingly
 outsourcing the complex task of converting raw natural gas produced at the
 wellhead to marketable natural gas and natural gas liquids.
 
                     MAKE YOUR OPINION COUNT -  Click Here
                http://tbutton.prnewswire.com/prn/11690X32411463
 
 SOURCE  MarkWest Hydrocarbon, Inc.