Founded in 1997 by David Rollen and headquartered in Coppell, Texas, Rock Materials is a wholesale distributor of natural and architectural cut stone, manufactured stone, cast stone and masonry supplies. Rock Materials also operates at a second location in Tomball, Texas, a suburb of Houston. Rock Materials is the largest provider of architectural stone within the state of Texas and the transaction marks a substantial expansion in this line of business for SRS.  The Company’s senior management team will continue in their functions, leading this effort while retaining upside opportunity as shareholders in SRS post-closing.

Founded in 1985 and based in Deer Park, Texas, Miller Integrated Solutions is a leading industrial cleaning, environmental, and mechanical services company that operates within the downstream, midstream, and upstream hydrocarbon processing markets. With six strategically located facilities across its Gulf Coast footprint, Miller Integrated Solutions leverages its 400+ field-based crewmembers to support over 100 master service agreements across multiple recurring, maintenance-driven, service disciplines including tank cleaning, unmanned hydroblasting, vacuum truck services, spill cleanup, air mover & hydro excavation, chemical cleaning, vapor control, rubber lining & coating services, field specialty welding, mechanical maintenance and fabrication. The Company also has extensive experience in the environmental spill response industry and can build, clean and demolish equipment and structures, as well as support any environmental needs throughout the lifecycle of its customers.

Founded in 2009 and based in Reno, Nevada, NDSS is the largest installer of drywall, stucco and stone materials for contractors serving the multifamily residential, commercial and housing markets in western Nevada and eastern California. The principals of NDSS will retain equity positions in the business and will continue in their leadership roles.

Permico Midstream is a development-stage midstream oil and gas company based in Houston, Texas. The Company is focused upon developing, constructing, and operating assets to transport and process natural gas liquids in Texas, as well as the domestic and international marketing of the end products.

Plasson USA is a full line manufacturer of high-density polyethylene (HDPE) pressure pipe fittings from ½” to 65″ diameter and pressures up to 320 pound-force per square inch, and lower-pressure HDPE pipe up to 120″ in diameter under its Spirolite™ brand. The Company’s customers are distributors to industry, municipalities and commercial enterprises across North America. Following the acquisition, former parent company Plasson Ltd. will retain its core business distributing HDPE Electrofusion products throughout North America.

Founded in 1986 and headquartered in Baytown, Texas, EMSI is a leading environmental services company providing emissions leak detection and repair services. The Company designs and administers programs necessary for client compliance with a complex array of federal, state and local environmental regulations. EMSI employs more than 300 technicians within some of the largest refineries, petrochemical, natural gas processing, oil and gas pipeline, and specialty chemical plants in the United States. It serves more than 150 facilities in 38 states across the nation, with a leading presence in the Gulf Coast region.