Pressure Sciences Inc

Salas O'Brien Engineers is an employee-owned engineering and facility planning firm that tackles complex technical challenges with a combination of international expertise and local action. With offices across the United States and Canada, Salas O'Brien provides a wide range of services in the fields of MEP (mechanical, electrical, and plumbing), structural, civil, and technology engineering, as well as acoustics, architecture, lighting, and more.Generated from the website

Wrightson, Johnson, Haddon & Williams is a consulting firm that offers design services in sound systems, audiovisual, and video and scoring displays. The firm provides services for performance arts, theatre and entertainment spaces. It has worked on hotels, resorts, and municipal, casino, civic and convention facilities. Wrightson, Johnson, Haddon & Williams also has a library of acoustical, architectural and technical products, as well as texts and journals. The company provides design services for performance rigging, video surveillance and access control systems. It offers additional services for theatre planning, lighting, and acoustics and noise control. Wrightson, Johnson, Haddon & Williams maintains a location in Dallas.