@amazeifystore: The sensors were screaming, but the ground wasn't the problem. 🚨 Big Bertha's main bearing was fighting something invisible. Gritty soil bypassed the seals, turning lubricant into liquid sandpaper. ⚙️ Dealing with abrasive glacial till is an engineering nightmare. How would you design a seal to keep the grit out? Let’s hear your thoughts! 👇 #BigBertha #TBM #Engineering #Tunneling #HeavyMachinery #CivilEngineering #MechanicalEngineering #Construction #Geotech #EngineeringFail #Infrastructure