⚙️🌀➡️🚇

#tbm #tunnel boring machine #tunneling #subway construction #underground excavation

🏗️⚙️➡️🚇

#construction machine #tunnel digging #subway construction #mechanized tunneling #infrastructure project #large diameter drilling

🚇🛠️👷

#metro work #subway construction #transit repair #public transport maintenance #underground work #metwrok typo