Subway Building. The TBM Launch shaft for the Scarborough subway extension at Sheppard Avenue East and McCowan. This is where the Tunnel Boring Machine (TBM) went into the ground to start tunneling, where the concrete wall segments get sent in, and where the spoil (the dirt cut by the TDM) comes out.
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Title of Musings on my Model Railroading Addiction: "Musings on my Model Railroading Addiction | A mad model railroaders adventures in modelling Toronto's Liberty Village in the 1950's."