Pictures from DTECH Here is a short gallery of pictures from DTECH. We will add more pictures as they become available. Navigate Hide Thumbs First Previous Pause Next Last Set Speed Slideshow speed: 5 seconds Move New Image Set The DTECH building at 130 West Waterman Street in Dumas. New classroom one. New classroom 2 Public access work stations in the spacious DTECH entrance lobby. Entrance to the Arkansas Workforce Center at DTECH.