* Roy D. McQueen and Associates - Civil engineering as it relates to pavement evaluation, engineering, testing and research for airports, highways and port facilities.
* Schwab-Eaton, P.A . - Civil engineers, landscape architects, and land surveyors. Offering planning and design consulting, surveying and engineering services. Located in Manhattan, Kansas.
* T.H.E. Section Bending Company Ltd - Poviding pecision section bending and plate rolling services to the engineering and building industries.
* SITE-Blauvelt Engineers, Inc . - A multi-disciplinary consulting engineering firm offering transportation design, geotechnical engineering, subsurface exploration, construction inspection, and materials testing services.
* Soil Solutions International - Specialists in the field of reinforced soil, motorway embankments, roads, steep slopes, retaining walls, sea walls, and bridge abutments.
* Souhegan Valley Engineering, Inc . - Designers of earth-reinforced segmental retaining walls and other site design services.
* Stevenson and Associates - Specialist for aquatic, mechanical and passive buliding designs.
* Structural Design Systems, Inc . - Offering structural engineering services for the construction of single and multi-story commercial, industrial and institutional facilities.
* Tectonic - Providing civil engineering, surveying, architecture and environmental services. Design and construction management for corporate, manufacturing, industrial, institutional, office or warehouse projects for the public and private sectors.
