U.S. Silica Holdings Inc. is a global performance materials company and is a member of the Russell 2000. The company is a leading producer of commercial silica used in the oil and gas industry and in a wide range of industrial applications. Over its 123-year history, U.S. Silica has developed core competencies in mining, processing, logistics and materials science that enable it to produce and cost-effectively deliver more than 600 diversified products to customers across our end markets. U.S. Silica's wholly-owned subsidiaries include EP Minerals and SandBox Logistics™. EP Minerals is an industry leader in the production of products derived from diatomaceous earth, perlite, engineered clays and non-activated clays. SandBox Logistics™ is a state-of-the-art leader in proppant storage, handling and well-site delivery, and is dedicated to making proppant logistics cleaner, safer and more efficient. The company has 27 operating mines and processing facilities and two additional exploration stage properties across the United States and is headquartered in Katy, Texas.

Genesis Energy, L.P. (NYSE: GEL) is a publicly traded diversified midstream energy master limited partnership headquartered in Houston, Texas. As a flexible and responsive supply and logistics company, our custom solutions allow us to move product to market in the most efficient and cost-effective manner, while maintaining our strong cultural focus on safety and reliability. Through our four divisions: offshore pipeline transportation, chemicals, onshore facilities and transportation and marine transportation, we provide an integrated suite of services to integrated oil companies, large independent oil and gas or refinery companies and large industrial and commercial enterprises. We are primarily located in Texas, Louisiana, Arkansas, Mississippi, Alabama, Florida, Wyoming and the Gulf of Mexico.

Privately owned distributor of salt products for agricultural, de-icing, food processing, pool water softening and industrial use.

Quintana Minerals Corporation is an oil & energy company based out of 601 JEFFERSON ST, Houston, Texas, United States.

Our facility in Pasadena, Texas is the largest producer of synthetic granulated ammonium sulfate fertilizer in North America. We produce a high quality form of ammonium sulfate. Our facility is strategically located along the Houston Ship Channel, with access to vessels, barge, rail and major highways. This allows us to deliver products within the U.S. and abroad at a significant freight advantage over our competitors. Our Pasadena Facility is located along the Houston Ship Channel, with access to all major modes of transportation. The facility has two deep-water docks, providing access to the Mississippi waterway system and international waterways. The facility is also connected to key domestic railways that permit the efficient, cost-effective distribution of our products west of the Mississippi River. Our Pasadena Facility’s products are sold primarily through distributors to customers in the United States and internationally. Our fertilizers are applied to many types of crops, including soybeans, potatoes, cotton, canola, alfalfa, corn and wheat. IOC is our exclusive distributor of our ammonium sulfate product. We also have access to IOC storage terminals across the U.S., which are located near our customers.

Hi-Crush is a premier provider of proppant and logistics solutions to the North American petroleum industry. Our portfolio of purpose-built production facilities are capable of producing 17.3 million tons per year of high-quality monocrystalline sand, a specialized mineral used as a proppant during the well completion process to facilitate oil and natural gas recovery. Our production facilities'​ direct access to major U.S. railroads enhance our delivery capabilities into consuming basins, while our strategically located owned and operated in-basin terminals as well as our in-basin production facility position us within close proximity to significant activity in all major oil and gas basins for advantageous truck transportation. Our integrated distribution system, enhanced by our innovative PropStream® logistics solution, efficiently delivers proppant the "last mile"​ into the blender, providing customers surety of supply from mine to wellsite. Visit our website at HiCrush.com.

For over 75 years Allura has been manufacturing and distributing fiber cement exterior building products that include lap siding, panels, soffits, shakes, and exterior trim. Our products, manufactured in North Carolina, Indiana and Oregon are specially formulated for high performance, look like natural wood but are fire, bug, moisture, impact and fade resistant with the strength and durability. Our products also save you money because they are long-lasting, greatly reducing the need for repairs or replacement. Plus, they're backed by a tremendous 30-year warranty. All in all, Allura is the ultimate alternative to other building materials.

Instawares Holding Company, LLC is an information technology and services company based out of 1791 O.G. Skinner Drive, West Point, Georgia, United States.

Sand Hill Property Company specializes in the Silicon Valley real estate market and has a proven track record of selecting and executing successful value-add real estate projects. The Company approaches each project with the intention of retaining it as long-term real estate portfolio. However, given the high demand in the marketplace for high quality and high security real estate projects, the Company also sells its projects to qualified buyers. Over the years, the Company has developed more than 65 projects encompassing 20 million square feet of building area throughout the Silicon Valley, ranging in size from a stand-alone retail store to multi-use city centers containing millions of square feet in building area. The Company has developed projects of all use types, including shopping centers, office complexes, hotels, and mixed-use communities.

Refractory Products, Service & Manufacturing TFL offers a wide range of refractory-related services and products. Our ability to offer more than just "a bag of refractory"​ has contributed to our success over the years. We assist our clients in solving their refractory lining problems with solutions based on technical reasoning and sound engineering practice. TFL provides refractory products and related services to refractory users in many industries including power generation, steel, aluminum, lumber, pulp and paper, minerals processing and industrial furnaces. We specialize in the design and manufacture of precast refractory shapes of all types for virtually any application. Our facilities include custom mold-making capabilities, automated mixing equipment, and two large furnaces for firing our shapes. Precast Refractory Shapes The use of pre-cast shape technology can greatly enhance the performance of refractory linings in your equipment. TFL is a leader in developing innovative applications for pre-cast shapes. Refractory Anchors When it comes to refractory anchors, TFL understands the importance of quick response. Delivery delays of these critical components can have serious consequences on any job. TFL will assist you with your refractory anchor needs, and supply only the highest quality alloy and ceramic anchors, including our popular Rotalock Anchor. Refractory Services When You Need Them At TFL, we understand the importance of quick response and dependable service, and we pride ourselves on serving our customers'​ needs as quickly as we can. We are available any time, even after normal business hours, and we will strive to assist you with your emergency needs in any way we can. We look forward to discussing our capabilities and services, and assisting you with your refractory-related needs.

Smart Material Corporation, with its affiliated company Smart Material GmbH, is a developer and manufacturer of advanced piezo composite materials and systems based on these materials. Piezo composite materials belong to the group of new materials or smart materials. MFCPiezo composite materials manufactured by Smart Material Corp. are used in a wide spectrum of applications as actuators and sensors, in ultrasound transducers and vibration energy harvesting devices. Smart Material Corporation was founded in Sarasota, Florida in 2000. Smart Material GmbH was founded shortly after in July 2002 in Dresden, Germany.