At Stornoway, there was a 2.4% fall, mainly due to the completion of the school building programme, a project which used external construction workers flying between Stornoway and the mainland.

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Property damage claims were analyzed over a two-year period (from January 2009 to December 2010) to ensure the findings would not be impacted by external influences such as weather or road construction.

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It enables the construction to function as a self-managing ecosystem with less need for external energy.

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