please help improve it or discuss these issues on the talk page . learn how and when to remove these template messages this article needs additional citations for verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . april 2014 learn how and when to remove this template message the topic of this article may not meet wikipedia s notability guidelines for companies and organizations . please help to establish notability by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond its mere trivial mention . if notability can not be established the article is likely to be merged redirected or deleted . find sources markwest energy news newspapers books scholar jstor free images april 2014 learn how and when to remove this template message learn how and when to remove this template message markwest energy partners lp type subsidiary industry oil & gas refining and marketing founded 1988 1 headquarters denver colorado key people frank m. semple ceo revenue us 0 1.687 billion 2013 2 total assets us 0 9.396 billion 2013 2 parent mplx lp nyse mplx website www.markwest.com markwest energy partners l.p. is a natural gas gathering processing and transportation company master limited partnership of the united states . the company is also engaged in transporting and fractionating the natural gas liquids . the company divides the business into four parts southwest northeast liberty and utica . since 2007 the company develops natural gas supplies in emerging resource plays now it has become the majority of its growth . 3 history edit in 1988 the company was founded in denver colorado . 1 references edit a b c mwe profile markwest energy partners lp co stock . yahoo finance . 2012 12 31 . retrieved 2014 03 23 . a b edgar pro . google.brand.edgar online.com . retrieved 2014 03 23 . markwest energy partners lp mwe company profile . reuters.com . 2013 11 18 . retrieved 2014 03 23 . external links edit official website this article about energy its collection its distribution or its uses is a stub . you can help wikipedia by expanding it . v t e this article about a natural gas or petroleum related company is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title markwest energy & oldid 743429710 categories natural gas companies of the united statesnatural gas pipeline companiesoil companies of the united statescompanies based in denverenergy companies established in 1988non renewable resource companies established in 1988companies listed on the new york stock exchangeenergy stubspetroleum company stubshidden categories articles needing additional references from april 2014all articles needing additional referencesarticles with topics of unclear notability from april 2014all articles with topics of unclear notabilitypages using infobox company with unsupported parametersall stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 9 october 2016 at 16 32 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view