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The TBM family is complete!

Welcome the last two tunnel boring machines (TBMs) to the Purple (D Line) Extension family. Iris and Aura, the Section 3 TBMs, have joined Elsie and Soyeon along with Harriet and Ruth, the Section 1 and Section 2 TBMs in LA.

Elsie and Soyeon, the TBMs for Section 1, are currently digging two parallel tunnels to connect three new stations between Koreatown and Beverly Hills. Meanwhile, Harriet and Ruth, the TBMs for Section 2, are currently digging the tunnels that will connect two new stations between Century City and Beverly Hills. Iris and Aura, the last TBMs to launch for Section 3, dig the tunnels to connect two new stations in Westwood finishing the tunnel connection to the Westside.

Follow the Purple Line Extension TBMs journey into the Earth on Twitter @PurpleLineTBMs .