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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000000000-05-019242.txt : 20060707
<SEC-HEADER>0000000000-05-019242.hdr.sgml : 20060707
<ACCEPTANCE-DATETIME>20050420114007
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000000000-05-019242
CONFORMED SUBMISSION TYPE:	UPLOAD
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20050420

FILED FOR:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARKWEST HYDROCARBON INC
		CENTRAL INDEX KEY:			0001019756
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				841352233
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		UPLOAD

	BUSINESS ADDRESS:	
		STREET 1:		155 INVERNESS DRIVE WEST
		STREET 2:		SUITE 200
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112-5004
		BUSINESS PHONE:		3032908700

	MAIL ADDRESS:	
		STREET 1:		155 INVERNESS DRIVE WEST
		STREET 2:		SUITE 200
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112-5004
PUBLIC REFERENCE ACCESSION NUMBER:		0001104659-05-016706
</SEC-HEADER>
<DOCUMENT>
<TYPE>LETTER
<SEQUENCE>1
<FILENAME>filename1.txt
<TEXT>
DIVISION LETTERHEAD

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549-0405

         DIVISION OF
CORPORATION FINANCE


      					April 20, 2005

Mr. James G. Ivey
Chief Financial Officer
MarkWest Hydrocarbon, Inc.
155 Inverness Drive West, Suite 200
Englewood, CO  80112-5000

Re:	Item 4.02 Form 8-K
	Filed April 15, 2005
	File No. 001-14841

Dear Mr. Ivey:

	We have reviewed your Item 4.02 Form 8-K for compliance with
the
form requirements and have the following comment.
1. We note that you intend to file restated financial statements.
However you have not indicated when you intend to do so. Please
tell
us when you intend to file restated financial statements. We may
have
further comment after you file the restated financial statements.

	You should file an amendment to the Form 8-K in response to
this
comment on or before April 27, 2005.

	If you have any questions, please call April Sifford at (202)
942-2983.

							Sincerely,


							April Sifford
							Branch Chief

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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