UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) February 521, 2008

MARKWEST HYDROCARBON, INC.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of

incorporation or organization)

001-14841

(Commission File Number)

84-1352233

(I.R.S. Employer

Identification Number)

1515 Arapahoe Street, Tower 2, Suite 700, Denver, CO 80202 (Address of principal executive offices)

(Address of principal executive offices)

Registrant’s telephone number, including area code: 303-925-9200

Not Applicable.

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

x o Written Communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-Commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-Commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

~~Item~~ITEM 87.01. ~~Other~~Regulation ~~Events~~FD Disclosure

On February 521, 2008, ~~MarkWest Hydrocarbon, Inc. (~~the “Corporation”) ~~announced~~and the ~~that~~Partnership itissued ~~sent~~a tojoint ~~its~~press ~~stockholders~~release ofannouncing ~~record,~~the ~~on or~~successful ~~about~~completion ~~January 18, 2008, a Joint Proxy Statement/Prospectus seeking approval~~ of the ~~Redemption~~redemption and ~~Merger~~merger. ~~transaction~~The ~~between~~press ~~MarkWest~~release ~~Energy Partners,~~is ~~L.P.~~furnished and attached ~~the~~hereto ~~Corporation,~~ as ~~announced on September~~Exhibit ~~5, 2007 (the “Merger”)~~99. ~~The~~1 ~~stockholders~~and ofis ~~the Corporation~~incorporated ~~should~~by ~~have~~reference ~~separately~~into ~~received an Election Form for~~this ~~stockholders to elect the form of consideration they prefer to receive in exchange for their shares of MarkWest Hydrocarbon common stock in connection with the Merger~~Item 7.01.

The ~~Corporation~~information ~~stockholders~~furnished ~~may~~pursuant ~~elect~~ to ~~receive~~Item ~~the~~7.01 ~~stated~~in ~~consideration~~this ofreport 1on Form 8-K, including Exhibit 99.~~285~~1, ~~common~~shall ~~units~~not be deemed to be “filed” for the purposes of ~~MarkWest~~Section 18 ~~Energy~~of ~~Partners~~the ~~plus~~Securities ~~$20.00~~Exchange ~~cash,~~Act onof a1934 ~~per~~(the ~~share~~“Exchange ~~basis,~~Act”) or ~~they~~otherwise ~~may~~subject ~~elect~~ to ~~receive~~the ~~all~~liability of ~~cash~~that section, ~~all~~unless the Corporation specifically states that the ~~common~~information ~~units,~~is to be considered “filed” under the Exchange Act or incorporates it by reference into a ~~combination~~filing ~~thereof,~~under ~~subject~~the toSecurities ~~pro~~Act ~~ration~~of ~~and~~1933 ~~an equalization~~or ~~formula~~the Exchange Act.

~~The~~ITEM ~~Corporation reminds its stockholders that receipt of a completed Election Form by Wells Fargo Bank, N~~8.~~A.,~~01 ~~the Redemption/Exchange~~OTHER ~~Agent, is due by 5:00 pm Eastern Standard Time on February 20, 2008 (the “Election Deadline”)~~EVENTS.

~~Corporation~~At ~~stockholders~~a ~~whose~~special ~~shares~~meeting of stockholders of MarkWest Hydrocarbon ~~are~~, Inc. ~~held~~(the in“Corporation”) aheld ~~brokerage~~today, ~~account~~the ~~should~~Corporation’s stockholders ~~have~~approved ~~received~~and anadopted ~~Election~~the ~~Form from their~~previously ~~broker. If~~announced aAgreement ~~stockholder~~and ~~has not~~Plan ~~yet~~of ~~received~~Redemption anand ~~Election~~Merger ~~Form,~~ (the ~~stockholder~~“Redemption ~~should~~and ~~immediately~~Merger ~~contact~~Agreement”), ~~their broker~~dated toSeptember 5, ~~obtain the Election Form~~2007, by and ~~then~~among the ~~timely~~Corporation, ~~provide~~MarkWest ~~their broker with~~Energy ~~their election~~Partners, soL.P. ~~that~~(the ~~their~~“Partnership”), ~~broker~~and ~~may~~MWEP, ~~submit~~L.L.C. ~~such~~a ~~information~~wholly ~~to the~~owned ~~Redemption/Exchange~~subsidiary ~~Agent~~of ~~on or before~~ the ~~Election Deadline~~Partnership.

~~Should~~In addition, the Corporation’s stockholders voted ~~have~~to ~~any~~approve ~~questions~~an amendment ~~regarding~~to the Corporation’s certificate of incorporation, which was ~~election~~necessary ~~process~~to orprovide for the ~~Election~~redemption ~~Form,~~pursuant to the ~~stockholder~~Redemption ~~should~~and ~~contact:~~Merger Agreement and to provide the Corporation’s stockholders appraisal rights in connection with the redemption.

~~The~~Following ~~Altman~~stockholder ~~Group~~approval, the redemption and merger closed today. In connection with the redemption, the Corporation’s stockholders will receive an aggregate of approximately $241 million in cash. In connection with the merger, the Corporation’s stockholders will receive an aggregate of approximately 15.5 million common units of the Partnership. Each of the Corporation’s stockholders could elect to receive all cash, all common units, the “stated consideration” consisting of 1.285 common units and $20.00 in cash for each of their shares, or any combination thereof. The stated consideration represents a 22% premium to the closing price of the Corporation’s common stock on September ~~Inc~~5, 2007, the last trading day before the public announcement of the proposed redemption and merger. The elections for cash or common units may be subject to proration and equalization procedures. The Corporation’s common stock will no longer be traded on the American Stock Exchange after the close of business today.

~~1200~~ITEM ~~Wall~~9.01 ~~Street~~Financial ~~West~~Statements —and ~~3rd Floor~~Exhibits

Lyndhurst, NJ 07071

(d)		Exhibits.

	99.1*		Press Release, dated February 21, 2008, announcing successful completion of the redemption and merger

~~Toll~~* ~~free~~Furnished ~~(866) 822-1239~~herewith.

~~The press release announcing this information is filed as Exhibit 99.1.~~2

~~Cautionary Statements~~SIGNATURE

~~This~~Pursuant ~~filing~~to ~~includes “forward-looking statements” within~~ the ~~meaning~~ requirements of ~~Section 27A of~~ the Securities ~~Act of 1933, as amended,~~ and ~~Section 21E of the Securities~~ Exchange Act of 1934, as amended. 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 we believe that the ~~expectations~~Registrant ~~reflected~~has induly ~~the~~caused ~~forward-looking~~this ~~statements~~report ~~are reasonable, we can give no assurance that such expectations will prove~~ to be ~~correct. The~~signed ~~forward-looking statements~~on ~~involve~~its ~~risks~~behalf ~~and~~by ~~uncertainties that affect our operations, financial performance and other factors as discussed in our filings with~~ the ~~Securities~~ ~~and Exchange Commission. Among the factors that could cause results to differ materially are those risks discussed in our Form 10-K/A for the year ended December 31~~undersigned, ~~2006,~~ asthereunto ~~filed with the SEC. You are~~duly ~~urged to carefully review and consider the cautionary statements and other disclosures made in those filings, specifically those under the heading “Risk Factors~~authorized.~~” We do not undertake any duty to update any forward-looking statement.~~

Although we believe that the expectations reflected in the forward-looking statements, specifically those referring to future performance, growth, cash flow, operating income, distributable cash flow (DCF), distributions, or other factors, are reasonable, these forward-looking statements are not guarantees of future performance, and we can give no assurance that such expectations will prove to be correct and that projected performance or distributions may not be achieved. Among the factors that could cause results to differ materially are those risks discussed in our Form S-1, as amended, our Annual Report on Form 10-K for the year ended December 31, 2006, as amended, and our Quarterly Reports on Form 10-Q, each as filed with the SEC. You are also urged to carefully review and consider the cautionary statements and other disclosures, including those under the heading “Risk Factors,” made in those filings, which identify and discuss significant risks, uncertainties and various other factors that could cause

			MARKWEST HYDROCARBON, INC.
		(Registrant)


Date: February 21, 2008	By:	/s/ NANCY K. BUESE
		Nancy K. Buese
		Senior Vice President and Chief Financial Officer

actual results to vary significantly from those expressed or implied in the forward-looking statements. We do not undertake any duty to update any forward-looking statement.

MarkWest Energy Partners and MarkWest Hydrocarbon filed a definitive joint proxy statement/prospectus and other documents with the Securities and Exchange Commission (the “SEC”) in relation to the merger transaction announced on September 5, 2007. Investors and security holders are urged to read these documents carefully because they contain important information regarding MarkWest Energy Partners, MarkWest Hydrocarbon, and the transaction. A definitive joint proxy statement/prospectus has been sent to security holders of MarkWest Energy Partners and MarkWest Hydrocarbon seeking their approval of the transactions contemplated by the redemption and merger agreement. Investors and security holders may obtain a free copy of the joint proxy statement/prospectus and other documents containing information about MarkWest Energy Partners and MarkWest Hydrocarbon, without charge, at the SEC’s website at www.sec.gov. Copies of the joint proxy statement/prospectus and the SEC filings that are incorporated by reference in the joint proxy statement/prospectus may also be obtained free of charge by directing a request to the entities’ investor relations department at 866-858-0482, or by accessing their website at www.markwest.com.

MarkWest Energy Partners, MarkWest Hydrocarbon, the officers and directors of the general partner of MarkWest Energy Partners, and the officers and directors of MarkWest Hydrocarbon may be deemed to be participants in the solicitation of proxies from their security holders. Information about these persons can be found in the Annual Report on Form 10-K for each of MarkWest Energy Partners and MarkWest Hydrocarbon, as filed with the SEC, and additional information about such persons may be obtained from the joint proxy statement/prospectus.

This filing shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of the Securities Act of 1933, as amended.

Item 9.01. Financial Statement and Exhibits

(d) Exhibits.

		Exhibit No.		Description of Exhibit
		99.1		Press release dated February 5, 2008, announcing election procedures reminder

SIGNATURE

Pursuant to the requirements of the Securities and Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		MARKWEST HYDROCARBON, INC.
		(Registrant)
Date: February 6, 2008	By:	/s/ NANCY K. BUESE
		Nancy K. Buese Chief Financial Officer

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