Established very shortly after SBIR began operations, Mainstream Engineering Corporation was an early program awardee across several of the non-life science agencies. with management defining the firm as a solutions-oriented research, development and manufacturing small business. Management's "Engineering Mission" was defined as R&D in the arenas of emerging technologies and the engineering of these technologies into superior-quality, military- and private-sector products that provide a technological advantage. Ranked high among those inthe SBIR community in terms of number of funded projects, areas of expertise include thermal control, energy conversion, turbo-machinery, chemical-based technologies and materials science. The firm began as a thermal-science R&D company solving NASA and DOD problems related to thermal control, replacement working fluids and advanced heat pump development. Decades later, while continuing to perform these R&D projects for NASA, DOD, DOE, USDA, DOT and DOC (NIST) applications, management have also found a substabtial need for rapid, cost-effective engineering solutions in the commercial world. To that end, Mainstream has in-house facilities to transition an innovation from its initial laboratory proof-of-concept demonstration to production.