We want the tried, true and tested. When it's 40 below and the wind is 40 miles an hour, you want to be able to rely on things.

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It's really a hard thing to get going. It's hard to motivate a district that has a limited amount of funding. Doing a life-cycle cost analysis may add 40, 50 or 60 thousand dollars to the cost. Carrying out the recommendation from the analysis could add an even more considerable sum.

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