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| System-Elements for Tunnel-Basement |
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System-Elements for Tunnel-Walls/Ceilings |
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| System-Elements for Machine-Rooms |
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Assembly with Mobile Crane |
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| Finally Assembled Composting Tunnels |
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Ventilation of Maturation Platform |
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| Tunnel-Filling Machine (Manually Operated) |
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Tunnel-Emptying Machine |
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| Ventilation Floor with Drag-Net |
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