Marathon Petroleum Corporation & MPLX

Marathon Petroleum Corporation (MPC) is a leading, integrated, downstream energy company headquartered in Findlay, Ohio. The company operates the nation's largest refining system. MPC's marketing system includes branded locations across the United States, including Marathon brand retail outlets. MPLX is a diversified, large-cap master limited partnership formed by Marathon Petroleum Corporation (MPC) that owns and operates midstream energy infrastructure and logistics assets, and provides fuels distribution services.

Catlettsburg, KY 41129, USA | -

Marble King

Established in the late 1940's, Marble King Marbles have gained a high level of recognition and respect worldwide. Explore and understand why this brand is synonymous with tradition, quality, and history by visiting their interactive museum and the expanded gift shop. Not only have these marbles been highlighted on local news channels, but they have also made appearances in several Hollywood films. Indeed, Marble King Marbles have justifiably earned the title of being the world's best-known and most-loved marbles.

Paden City, WV, USA | Tyler

Marshall Advanced Manufacturing Center

The Marshall Advanced Manufacturing Center (formerly RCBI) encourages job creation, economic development, innovation and entrepreneurship by supporting manufacturing companies of all sizes. We offer leading-edge equipment use and specialized training for everyone from sole proprietors to Fortune 500 companies.

1050 4th Ave, Huntington, WV 25701, USA | Cabell

Mary Ann Green Communications

For more than 30 years, Mary has helped clients around the country build lasting relationships with their communities, elected officials, regulatory officials and media representatives. Although each company, community and person is unique, Mary has found they share one common element: Respect matters. Her years of expertise are built upon a foundation of listening, honesty, and creating programs that make a difference and earn trust.

106 S Gate Pl, Charleston, WV 25314, USA | Kanawha

Mayo Manufacturing Co., Inc.

Mayo Manufacturing is a mining equipment repair shop located in southern West Virginia. We provide underground mining equipment to over 50 operations.

54 Owens Rd, Chapmanville, WV 25508, USA | Logan

Messer North America, Inc.

With over 70 production facilities and approximately 5,000 employees operating in the United States, Canada, Brazil, Colombia and Chile, Messer Americas today is one of the leading industrial gas companies in North and South America and part of the world’s largest privately-held industrial gases enterprise.

9938 Dupont Rd, Washington, WV 26181, USA | Wood

Metsch Refractories, Inc.

MRI is a dry process, custom design manufacturer of technical ceramics for industrial and consumer products. At MRI, we have been meeting customer needs for over 50 years, encompassing literally thousands of applications across a wide scope of industries. It is with our know-how – technical knowledge, experience and versatile capability – that we can address an application need and manufacture the right product for it. Our know-how is in everything we do. In design assistance. In ceramic body compositions. In product forming and firing methods. And, in a stringent quality control program. The result is a reliable technical ceramic for your specific need.

12413 Ohio River Blvd, Chester, WV 26034, USA | Hancock

Momentive Performance Materials

Momentive Inc. is an American chemical company. Its products include silicones and quartz. Momentive is headquartered in Waterford, New York. The company employs 9,200 employees across more than 50 locations throughout North America, Europe, Asia, and South America. In 2019, it had sales of $6.5 billion.

10851 Energy Hwy, Friendly, WV 26146, USA | Tyler


Montrose Environmental was one of the first to see environmental responsibility as not just an imperative but as a strategic asset. And we’re well ahead of the curve in applying the latest technologies in practical ways to solve difficult environmental challenges.

2501 Chapline St, Wheeling, WV 26003, USA | Marshall

Mott McDonald

The Mott MacDonald Group is a consultancy headquartered in the United Kingdom. It employs 16,000 staff in 150 countries. Mott MacDonald is one of the largest employee-owned companies in the world. It was established in 1989 by the merger of Mott, Hay and Anderson with Sir M MacDonald & Partners.

201 Pennsylvania Ave #4th, Charleston, WV 25302, USA | Kanawha

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