| 11. | Concrete lining was done during construction due to tunnel cave-ins.
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| 12. | Chunks of concrete lining falling from the tunnel's ceiling have repeatedly interrupted salvage operations.
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| 13. | It includes a concrete lined hole, 6 x 8 metres and 5 metres deep.
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| 14. | The 5 tunnels are steel and concrete lined and 1, 560 feet long in bedrock.
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| 15. | The completed facility had a diameter of complete with a steel shell with of concrete lining.
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| 16. | A concrete lined Head-race channel is used to convey the water from Bong Pond to Powerhouse.
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| 17. | Chunks of concrete lining falling from the ceiling of the tunnel have repeatedly interrupted salvage operations.
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| 18. | Tunnel 1 is concrete lined ( as are all the tunnels ), straight and 66m long.
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| 19. | During the fire, chunks of the concrete lining the tunnel fell away because of the heat.
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| 20. | The concrete lining surrounding the disposal site will slowly increase its permeability over time due to degradation.
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