...ring machine brand used. It's a Robbins
*they* are Robins. 2 #Robbins Crossover TBMs to Bore Second Severomuysky Tunnel
https://tunnelingonline.com/two-robbins-crossover-tbms-to-bore-second-severomuy...
So there are savvy contractors out there who still value quality over cheap equipment.
A Robbins Crossover TBM will bore Mumbai's tunnels
https://tunnelingonline.com/liebherr-robbins-ease-congestion-mumbai/
#TheRobbinsCompany