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Chicago Sewer System

• Bolting Sections into Place in the Tunnel
  
• Calumet Sewage Disposal Plant, Exterior View
  
• Chicago Sewer System Pumps
  
• Constructing a Disposal Plant: Pouring Concrete
  
• Constructing a Disposal Plant: Steel Reinforcements
  
• Constructing a Disposal Plant: Steel Reinforcements
  
• Huge Motor-Driven Pumps in the Calumet Sewage Disposal Plant
  
• Inspecting the Sewage Tunnel
  
• Motor Room, Calumet Sewage Disposal Plant
  
• Sandhogs Drive a Tunnel in the Chicago Sewer System
  
• Settling Tanks at the Southwestern Disposal Plant, Chicago
  
• Switching a Muck Train
  
• Underground Survey Work