https://studylib.net/doc/25499820/a-smart-tunnel-inspection-robot-for-the-detection-of-pipe...
Explore a Smart Tunnel Inspection Robot (STIR) for pipe culvert detection. Learn about its design, system, and wireless technology.
smart tunnelinspectionrobotpipeculvert
https://www.smartcitiesdive.com/news/hudson-tunnel-construction-trump-withholds-funding/810682/
Nearly 1,000 workers will lose their jobs on Feb. 6 if the $16 billion project in New York and New Jersey is put on hold, the project authority said.
hudson tunnelconstructionmaystoptrump