"TBM" can refer to various things depending on the context, but if you mean "TBM sites" in the context of tunnels or construction, it likely pertains to Tunnel Boring Machines (TBMs). These machines are used for excavating tunnels.
If you are looking for specific locations where TBMs are being used or sites related to tunneling projects, here are a few notable locations and projects known for their use of TBMs:
1. **New York City, USA** -