Tunnel. … L/vc-cr West Mall or Tumhei.PLAN VIEW OF CAVE-IN, SHOWING CRATER ANB BULKHEABS. PROFILE OF THE EASTERLY TUNNEL, SHOWING PRESENT STATE OF THE WORK. heading to the street level is, therefore, 48 feet. Ingeneral, the solid rock in which the tunnel lies ex-tends nearly to the surface of Park Avenue;…
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