-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, JzhD1ve8TuNfIteZKUmc6sJ7NSITKJoo8g6eFZEHP+/Bsse8OHBsmLQ85hhJiIfy Cs68+j+jsCNMb/YOmSay7w== 0001143313-08-000033.txt : 20080227 0001143313-08-000033.hdr.sgml : 20080227 20080227100004 ACCESSION NUMBER: 0001143313-08-000033 CONFORMED SUBMISSION TYPE: 25-NSE/A CONFIRMING COPY: PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20080227 DATE AS OF CHANGE: 20080227 SUBJECT COMPANY: 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: 25-NSE/A SEC ACT: 1934 Act SEC FILE NUMBER: 001-14841 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: AMERICAN STOCK EXCHANGE LLC CENTRAL INDEX KEY: 0001143313 IRS NUMBER: 522127241 FILING VALUES: FORM TYPE: 25-NSE/A BUSINESS ADDRESS: STREET 1: 86 TRINITY PLACE CITY: NEW YORK STATE: NY ZIP: 10006 BUSINESS PHONE: 212-306-1000 MAIL ADDRESS: STREET 1: 86 TRINITY PLACE CITY: NEW YORK STATE: NY ZIP: 10006 25-NSE/A 1 primary_doc.xml X0203 0001143313 AMERICAN STOCK EXCHANGE LLC 0001019756 MARKWEST HYDROCARBON INC 001-14841

1515 ARAPAHOE STREET, TOWER 2, SUITE 700 Denver CO COLORADO 80202-2126

303-925-9200 Common Stock, Par Value $.01 17 CFR 240.12d2-2(a)(3) Kerri L. Ramirez Manager, Corporate Actions and Proxy Rulings 2008-02-27 EX-99.25 2 ex-9925.txt NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The American Stock Exchange LLC hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on March 3, 2008, pursuant to the provisions of Rule 12d2-2 (a). 17CFR240.12d2-2(a)(3) The removal of MarkWest Hydrocarbon, Inc. Common Stock, Par Value $.01 is being effected because the Exchange knows or is reliably informed that on February 21, 2008 the instruments representing the securities comprising the entire class of this security came to evidence, by operation of law or otherwise, other securities in substitution therefore and represent no other right except, if such be the fact, the right to receive an immediate cash payment. The security was suspended from trading by the Exchange on February 22, 2008. -----END PRIVACY-ENHANCED MESSAGE-----