HOME ABOUT MPLX INVESTORS MARATHON PIPE LINE MARKWEST TARIFFS CONTACT US MPLX > About MPLX > Gathering and Processing ABOUT MPLX Logistics and Storage Gathering and Processing Sustainability Board of Directors Officers MPLX Fact Sheet Image Gallery Terms of Use Privacy Policy GATHERING AND PROCESSING MPLX operates several natural gas gathering systems with the scope of services provided dependent on the composition of the raw or untreated gas. Our natural gas processing complexes remove the heavier and more valuable hydrocarbon components from natural gas. Once natural gas has been processed, the heavier and more valuable hydrocarbon components, which have been extracted as a mixed NGL stream, can be further separated into their component parts for end-use sale through the process of fractionation. We sell basic NGL products, including ethane, propane, normal butane, isobutane and natural gasoline. © 2021 MPLX LP MPLX Marathon Petroleum Corporation About MPLX Logistics and Storage Gathering and Processing Sustainability Board of Directors Officers MPLX Fact Sheet Image Gallery Terms of Use Privacy Policy Investors Corporate Governance Calendar of Events SEC Filings Press Releases Earnings Capsule Quarterly Investor Packet Stock Information Annual Report & 10-K Sustainability Reporting Unitholder Services Events and Presentations Investor FAQs Tax Reporting Package Email Alerts Contact Us Investor Relations Unitholder Services Corporate Public Affairs MPC Supply Chain Customer Portal MarkWest Visit the MarkWest site Pipeline Launcher/Receiver Emission Reduction Systems Marathon Pipe Line For Operation, Environmental and Safety Info: Marathon Pipe Line LLC