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Melika
@melikafrj
Tunnel building,TBM segment
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Panah🖌️🎨🔵🎩
@panah
What is this? I wish you could explain more
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Melika
@melikafrj
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology.
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