LOS ANGELES (CBSLA) — Two tunnel-digging machines that will bore through the ground to create a path for the Metro Purple Line subway under Wilshire Boulevard were unveiled today. The tunnel-boring ...
BirminghamWorld on MSN
Dramatic moment massive 410ft boring machine breaks through HS2 Birmingham tunnel
A video shows the breakthrough to complete the tunnel, which marked the end of excavations needed for all tunnels along the ...
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