Robert Stewart

W.R. Grace & Co. engages in the production and sale of chemicals and materials. It operates through the Grace Catalysts Technologies and Grace Materials Technologies segments. The Grace Catalysts Technologies segment includes catalysts and related products and technologies used in refining, petrochemical and other chemical manufacturing applications. The Grace Materials Technologies segment consists of specialty materials, including silica-based and silica-alumina-based materials, used in coatings, consumer, industrial, and pharmaceutical applications. The firm specializes in chemical processing, coatings and inks, food and beverage, general industrial, nutraceutical, personal care, pharma, and plastics industries. The company was founded by William Russell Grace in 1854 and is headquartered in Columbia, MD.

Part of Cargill, Inc., Seminole Fertilizer Corp is a company that specializes in phosphatic fertilizers. The company is based in Memphis, TN. Seminole Fertilizer was acquired by Cargill Fertilizer, Inc. from Tosco Corp. on May 05, 1993 for $150 million.

PCI Nitrogen LLC owns and operates phosphate fertilizers. The company was founded in 1998 and is headquartered in Pasadena, TX.

Philadelphia Energy Solutions LLC operates petroleum refineries. The firm in addition to producing unbranded gasoline, jet fuel, cleaner-burning diesel, petrochemicals, liquefied petroleum gas and sulfur in the Northeast. It offers a variety of diesels, including ultra-low-sulfur diesel, non-road, heating oil, locomotive, marine, non-jet kerosene and its rack products are additized and available in winter blends. The company was founded in 2012 and is headquartered in Philadelphia, PA.