MarkWest Energy Partners, L.P. http://www.alacrastore.com/company-snapshot/MarkWest_Energy_Partners_L_P-2510836 Friday, July 25, 2008 6:31:06 PM 2510836 MarkWest Energy Partners, L.P. en AlacraStore RSS Builder 1.0 30 US - MarkWest Energy Partners LP raised its stake from ##% to ##% in Centrahoma Processing LLC, an owner and operator of cryogen gas processing plants, in a privately negotiated transaction for $## mil.5/14/2008 1:47:23 PM57075915744L57075915744LMarkWest Energy Partners LPCentrahoma Processing LLCMarkWest Energy Partners LPCentrahoma Processing LLChttp://www.alacrastore.com/storecontent/Thomson_M%26A/MarkWest_Energy_Partners_LP_acquires_a_minority_stake_in_Centrahoma_Processing_LLC-1976999020sdc/19769990201976999020Copyright © 2008, Thomson Financial, All Rights ReservedAmericanOil and Gas; Petroleum RefiningUnited StatesCrude petroleum and natural gas1311COColoradoPublicMWE1311:Crude petroleum and natural gas1381:Drilling oil and gas wells1382:Oil and gas field exploration services4922:Natural gas transmission1311:Crude petroleum and natural gas1381:Drilling oil and gas wells1382:Oil and gas field exploration services4922:Natural gas transmissionElectric, Gas, and Water DistributionUnited StatesGas and other services combined4932OKOklahomaPrivate755917002Natural gas expl,prodn coOwn,op gas processing plantsCashCash OnlyStock1010244001May 14 20080.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.00000US31 Dec 070.000000.120004.378000.00000602.879001392.83400U.S. Dollar0.000001.000002.000003.000004.000005.000006.000007.000008.000009.0000010.0000011.00000MarkWest Energy Partners LP,headquartered in Denver,Colorado, a natural gasexploration and productioncompany. The company alsogathers, transports andprocess natural gas and crudeoil. It also fractionates,stores and markets natural gasliquids. The company wasfounded in 1988.MarkWest Energy Partners LP, headquartered in Denver,Colorado, a natural gas exploration and production company.The company also gathers, transports and process natural gasand crude oil. It also fractionates, stores and marketsnatural gas liquids. The company was founded in 1988.MarkWest Energy Partners LP, headquartered in Denver, Colorado, a natural gas exploration and production company. The company also gathers, transports and process natural gas and crude oil. It also fractionates, stores and markets natural gas liquids. The company was founded in 1988.1.000002.000003.000004.000005.00000Centrahoma Processing LLC,located in Centrahoma,Oklahoma, is an owner andoperator of cryogenic gasprocessing plants.Centrahoma Processing LLC, located in Centrahoma, Oklahoma,is an owner and operator of cryogenic gas processing plants.Centrahoma Processing LLC, located in Centrahoma, Oklahoma, is an owner and operator of cryogenic gas processing plants.0.000000.000000.000000.00000NU.S. Dollar12 May 08Mon, 12 May 2008 00:00:00 ESTDate Announced: 05/12/200812 May 08Date Effective: 05/12/200812 May 08Acq. Part. Int.Neutral0.000000.000000.000000.000000.000000.00000Price/Share0.0000012 U.S. Dollar12.000000.0000012 U.S. Dollar12.0000020.0000020.000000.000000.0000012.0000012 U.S. Dollar1.00000N6.133000.000000.000000.000000.000000.0000012.0000012.000000.000000.000000.000000.000000.000000.000000.0000020.000000.000000.000000.000000.000000.000000.000000.000000.000001607.173000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000001.000002.000003.000004.000005.000006.000007.000008.00000US - MarkWest Energy PartnersLP raised its stake from 20%to 40% in CentrahomaProcessing LLC, an owner andoperator of cryogen gasprocessing plants, in aprivately negotiatedtransaction for $12 mil.US - MarkWest Energy Partners LP raised its stake from 20% to 40% in Centrahoma Processing LLC, an owner and operator of cryogen gas processing plants, in a privately negotiated transaction for $12 mil.US - MarkWest Energy Partners LP raised its stake from 20% to 40% in Centrahoma ProcessingLLC, an owner and operator of cryogen gas processing plants, in a privately negotiatedtransaction for $12 mil.US - MarkWest Energy Partners LP raised its stake from 20% to 40% in Centrahoma Processing LLC, an owner and operator of cryogen gas processing plants, in a privately negotiated transaction for $12mil.US - MarkWest Energy Partners LP raised its stake from 20% to 40% in Centrahoma Processing LLC, an owner and operator of cryogen gasprocessing plants, in a privately negotiated transaction for $12 mil.Completed611.323004.37800602.879001392.834000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.00000Status:Completed-999.00000np0.00000-999.00000np0.000000.000000.000000.000000.000000.000000.000000.000000.000000.000000.000001382:Oil and gas field exploration services4925:Gas production and/or distribution4932:Gas and other services combined755917002AmericanUnited States1311ColoradoPublicMWE1382:Oil and gas field exploration services4925:Gas production and/or distribution4932:Gas and other services combined1010244001United States4932OklahomaPrivate12.0000012.0000012.000006.13300Deal InformationThomson Financial Mergers & Acquisitionshttp://www.alacrastore.com/storecontent/ccbn/T1832618ccbn/T1832618norm...Welcome to the MarkWest Energy Partners first quarter earnings conference call. Your lines have been placed on listen-only until the question-and-answer session of today's conference. This call is being recorded. If you have any objections, please disconnect at this time. I will now turn the call over to Dan Campbell. Thank you, sir, you may begin. ... 5/13/2008 5:06:00 PMMarkWest Energy Partners LP54.0000FinalQ1 2008 MarkWest Energy Partners LP Earnings Conference Call TranscriptMWE4:00pm ETTranscriptT1832618Credit & Investment ResearchThomson Street Eventshttp://www.alacrastore.com/storecontent/moodys/PR_154312_809041068moodys/PR_154312_809041068htmlGlobal Credit Research Announcement ## APR #### Announcement: MarkWest Energy Operating Company, L.L.C. Moody's affirms MarkWest's ratings Approximately $#.# billion of debt securities affected New York, April ##, #### -- Moody's Investors...4/30/2008 1:01:36 AMhtmlMarkWest Energy Operating Company, L.L.C.MarkWest Energy Partners, L.P.MarkWest Energy Operating Company, L.L.C.; MarkWest Energy Partners, L.P.809041068807797294150.0000NewsAnnouncementPR_154312_809041068Credit & Investment ResearchMoody's Global Credit Researchhttp://www.alacrastore.com/storecontent/spcred/645416spcred/645416normThe latest News from S&Pglobal4/29/2008 3:24:03 PM100News645416United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyNewsNEW YORK (Standard&Poor's) April 29, 2008--Standard&Poor's Ratings Services today affirmed its 'B+' corporate credit rating on midstream energy company MarkWest Energy Partners L.P. (MWE). At the same time, we raised our issue rating on the company's $1 billion senior unsecured notes due 2014, 2016, and 2018 to 'B+' from 'B' and raised the recovery rating to '4' from '5', indicating that lenders can expect average (30%-50%) recovery in the event of payment default. The outlook is stable. The rating action reflects the improved recovery prospects of the unsecured lenders following the repayment of the secured term loan using proceeds from the upsized offering of senior unsecured notes due 2018. MWE is a master limited partnership engagedUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWENEWSGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/spcred/645417spcred/645417normThe latest Research Update from S&Pglobal4/29/2008 3:24:03 PM175Research Update645417United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyResearch UpdateOn April 29, 2008, Standard&Poor's Ratings Services affirmed its 'B+' corporate credit rating on midstream energy company MarkWest Energy Partners L.P. (MWE). At the same time, we raised our issue rating on the company's $1 billion senior unsecured notes due 2014, 2016, and 2018 to 'B+' from 'B' and raised the recovery rating to '4' from '5', indicating that lenders can expect average (30%-50%) recovery in the event of payment default. The outlook is stable. The rating action reflects the improved recovery prospects of the unsecured lenders following the repayment of the secured term loan using proceeds from the upsized offering of senior unsecured notes due 2018. (For the complete recovery analysis, please see the recovery report onUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWERESUPDGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/newstex/BW-0001-24869932newstex/BW-0001-24869932xml DENVER, Apr. ##, #### (Business Wire) -- MarkWest Energy Partners, L.P. (NYSE:MWE) will announce first quarter #### financial results after market close on Monday, May ##, ####. You are invited to join a conference call and webcast...060000000600100006001002040000000401600004016048040160010401601804005000040050114/29/2008 11:18:40 AM180000001800400018008000Business WireBW-0001-24869932MARKWEST ENERGY PARTNERS L PANDREW L SCHROEDERFRANK M SEMPLERANDY S NICKERSONMWENewsNewstexhttp://www.alacrastore.com/storecontent/newstex/BW-0001-24766318newstex/BW-0001-24766318xml DENVER, Apr. ##, #### (Business Wire) -- MarkWest Energy Partners, L.P. (NYSE:MWE) today announced that the Board of Directors of the General Partner of MarkWest Energy Partners, L.P. declared a cash distribution of $#.## per common...060000000600100006001002040000000400500004005011040160000401604804016001040160184/24/2008 5:17:13 PM180000001800800018004000Business WireBW-0001-24766318MARKWEST ENERGY PARTNERS L PFRANK M SEMPLEMWENewsNewstexhttp://www.alacrastore.com/storecontent/spcred/641404spcred/641404normThe latest Research Update from S&P4/7/2008 3:47:26 PMResearch Update175global641404United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyResearch UpdateOn April 7, 2008, Standard&Poor's Ratings Services affirmed its 'B+' corporate credit rating on midstream energy company MarkWest Energy Partners L.P. (MWE). The outlook is stable. MWE is a master limited partnership (MLP) engaged in the gathering, processing, and transmission of natural gas; transport, fractionation, and storage of natural gas liquids; and gathering and transport of crude oil in the Southwest, Northeast, and Gulf Coast. The rating on MWE reflects a weak business risk profile due to the company's commodity price sensitivity, small asset base, historically acquisitive growth strategy, and large capital-spending plan. Increasing geographic diversity and the stability garnered from the company's hedging program mitigate the aforementioned risks. The rating on MWE also reflects the company's highUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWERESUPDGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/spcred/641402spcred/641402normThe latest News from S&P4/7/2008 3:47:25 PMNews100global641402United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyNewsNEW YORK (Standard&Poor's) April 7, 2008—Standard&Poor's Ratings Services today affirmed its 'B+' corporate credit rating on midstream energy company MarkWest Energy Partners L.P. (MWE). The outlook is stable. MWE is a master limited partnership (MLP) engaged in the gathering, processing, and transmission of natural gas; transport, fractionation, and storage of natural gas liquids; and gathering and transport of crude oil in the Southwest, Northeast, and Gulf Coast. The rating on MWE reflects a weak business risk profile due to the company's commodity price sensitivity, small asset base, historically acquisitive growth strategy, and large capital-spending plan. Somewhat mitigating these risks are increasing geographic diversity and the stability garnered from the company's hedging program. The rating on MWEUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWENEWSGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/ccbn/T1780062ccbn/T1780062norm...Welcome to the MarkWest Energy Partners fourth quarter earnings conference call. (OPERATOR INSTRUCTIONS). I will now turn the call over to Dan Campbell. Thank you, sir, you may begin. ... 3/4/2008 6:04:00 PMMarkWest Energy Partners LP54.0000FinalQ4 2007 MarkWest Energy Partners LP Earnings Conference Call TranscriptMWE4:00pm ETTranscriptT1780062Credit & Investment ResearchThomson Street Eventshttp://www.alacrastore.com/storecontent/spcred/632085spcred/632085normThe latest News from S&P2/22/2008 1:23:27 PMNews100global632085United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyNewsNEW YORK (Standard&Poor's) Feb. 22, 2008--Standard&Poor's Ratings Services said today that its ratings and outlook on MarkWest Energy Partners L.P. (B+/Stable/--) would be unaffected by the company's announcement that its equityholders have approved and adopted the previously announced planned merger with MarkWest Hydrocarbon Inc. We expect the transaction will increase leverage somewhat as well as increase commodity price exposure. In addition, liquidity may be tight in the short term, given the company's large capital-expenditure plan. However, potentially favorable aspects include eliminated incentive distribution rights. In total, we believe that the company has sufficient room to absorb these effects at the current rating.USA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWENEWSGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/spcred/627383spcred/627383normThe latest Full Report from S&P1/24/2008 2:54:33 PMFull Report400global627383United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyFull ReportStability garnered by the company's hedging program, and Increasing geographic diversity. High level of commodity price risk for a master limited partnership, Small asset base, and Acquisitive growth strategy. The ratings on midstream energy company MarkWest Energy Partners L.P. (MWE) reflect a business risk profile that Standard&Poor's Ratings Services categorizes as weak due to the company's commodity price sensitivity, small asset base, acquisitive growth strategy, and aggressive financial policy. Somewhat mitigating these risks are increasing geographic diversity and the stability garnered from the company's hedging program. Denver, Colo.-based MWE is a master limited partnership (MLP) engaged in the gathering, processing, and transmission of natural gas; the transport, fractionation, and storage of natural gas liquids; and the gathering andUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWEFULLGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/spcred/627384spcred/627384normThe latest Summary from S&P1/24/2008 2:54:33 PMSummary175global627384United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergySummaryThe ratings on midstream energy company MarkWest Energy Partners L.P. (MWE) reflect a business risk profile that Standard&Poor's Ratings Services categorizes as weak due to the company's commodity price sensitivity, small asset base, acquisitive growth strategy, and aggressive financial policy. Somewhat mitigating these risks are increasing geographic diversity and the stability garnered from the company's hedging program. Denver, Colo.-based MWE is a master limited partnership (MLP) engaged in the gathering, processing, and transmission of natural gas; the transport, fractionation, and storage of natural gas liquids; and the gathering and transport of crude oil in the Northeast, Southwest, and Gulf Coast regions of the U.S. The ratings on MWE reflect a business risk profile that is weak compared withUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWESUMMARYGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/moodys/COP_807797294moodys/COP_807797294htmlGlobal Credit Research Credit Opinion ## APR #### Credit Opinion: MarkWest Energy Partners, L.P. MarkWest Energy Partners, L.P. Denver, Colorado, United States Ratings Category Moody's Rating Outlook Stable Corporate Family Rating...1/4/2008 2:20:00 AMhtmlMarkWest Energy Partners, L.P.MarkWest Energy Partners, L.P.807797294150.0000NewsCredit OpinionCOP_807797294Credit & Investment ResearchMoody's Global Credit Researchhttp://www.alacrastore.com/storecontent/moodys/SGL_0807797294moodys/SGL_0807797294htmlSpec Grade Liquidity Assmt1/3/2008 7:55:21 PMGlobal Credit Research Spec Grade Liquidity Assmt ## MAR #### Spec Grade Liquidity Assmt: MarkWest Energy Partners, L.P. MarkWest Energy Partners, L.P. Moody's Investors Service affirmed MarkWest Energy Partners, L.P.'s (MarkWest or...MarkWest Energy Partners, L.P.807797294300.0000AnalysishtmlMarkWest Energy Partners, L.P.SGL_0807797294Credit & Investment ResearchMoody's Global Credit Researchhttp://www.alacrastore.com/storecontent/ccbn/T1683606ccbn/T1683606norm11/7/2007 11:05:00 PMMarkWest Energy Partners LP54.0000FinalQ3 2007 MarkWest Energy Partners LP Earnings Conference Call TranscriptMWE4:00pm ET...Good afternoon, and welcome to the MarkWest Energy Partners third quarter earnings conference call. As a reminder, your lines have been placed in listen only mode. Today's conference is being recorded. If you have any objections you may disconnect at this time. And now I'd like to turn the conference over to Mr. Dan Campbell. Thank you, sir, you may begin. ... TranscriptT1683606Credit & Investment ResearchThomson Street Eventshttp://www.alacrastore.com/storecontent/moodys/PR_140473_809041068moodys/PR_140473_809041068htmlRating Action9/7/2007 12:19:49 AMGlobal Credit Research Rating Action # SEP #### Rating Action: MarkWest Energy Operating Company, L.L.C. Moody's changes MarkWest's outlook to stable from positive Approximately $### million of debt securities affected New York, September...MarkWest Energy Operating Company, L.L.C.809041068150.0000Newshtml807890446Markwest Energy Finance Corporation807797294MarkWest Energy Partners, L.P.Markwest Energy Finance Corporation; MarkWest Energy Operating Company, L.L.C.; ...PR_140473_809041068Credit & Investment ResearchMoody's Global Credit Researchhttp://www.alacrastore.com/storecontent/spcred/599981spcred/599981normThe latest News from S&P9/6/2007 3:45:00 PMNews100global599981United StatesOil & Gas Storage & TransportationUnited StatesGlobal IssuersUtilitiesEnergyNewsNEW YORK (Standard&Poor's) Sept. 6, 2007--Standard&Poor's Rating Services said today that its ratings and outlook on MarkWest Energy Partners LP (B+/Stable/--) and affiliates would not immediately be affected by the company's announcement of its planned merger with MarkWest Hydrocarbon Inc. From a credit perspective, potentially favorable aspects of the transaction include the elimination of incentive distribution rights and a simplified corporate structure. We expect that the transaction will increase leverage over the next two years, but believe that the company has sufficient room in its current corporate credit rating to absorb the related additional debt. However, liquidity may be tight in the short term, as the transaction will be funded through an upsized secured revolving creditUSA57050610102040 101020 1010 10MarkWest Energy Partners LP382488USAMWENEWSGLOBISSUTILEnergyCredit & Investment ResearchS&P Credit Researchhttp://www.alacrastore.com/storecontent/ccbn/T1584356ccbn/T1584356norm8/24/2007 12:07:00 PMMarkWest Energy Partners LP54.0000FinalMarkWest Energy Partners LP at The 12th Oil & Gas Conference TranscriptMWE8:25am MT...Andy Schroeder and Nancy Buese are here for MarkWest Energy Partners. They do offer investors the unique opportunities for capital appreciation. The Company is the largest natural gas processor in the Appalachian Basin and has been extensive system of pipelines in East Texas, Oklahoma, Michigan, and along the Gulf Coast. Revenues are solid as are margins and cash flow. We'd like to say that the future is very bright for MarkWest. I will turn it over to Nancy. Nancy? ... TranscriptT1584356Credit & Investment ResearchThomson Street Eventshttp://www.alacrastore.com/storecontent/ccbn/T1615759ccbn/T1615759norm8/14/2007 5:06:00 PMMarkWest Energy Partners LP54.0000FinalMarkWest Energy Partners Second Quarter 2007 Earnings Conference Call TranscriptMWE4:00pm ET...Good afternoon, ladies and gentlemen, and welcome to the MarkWest Energy Partners conference call regarding their #### second quarter earnings. At this time, all participants are in a listen only mode. Following today's presentation, instructions will be given for the question and answer session. (OPERATOR INSTRUCTIONS) As a reminder, this call is being recorded on Tuesday, August ##, ####. I would now like to turn the conference over to Mr. Dan Campbell. Sir, you may begin. ... TranscriptT1615759Credit & Investment ResearchThomson Street Events