EXHIBIT 23


Consent of Independent Accountants

We hereby consent to the incorporation by reference in the Registration
Statements on Form S-8 (No. 333-20829 and No. 333-20833) of MarkWest
Hydrocarbon, Inc. of our report dated February 9, 2000 relating to the financial
statements, which appears in this Form 10-K.


PricewaterhouseCoopers LLP

Denver, Colorado
March 20, 2000