Each nation has employed its own methodology for maintenance and repairs of trains and subways, but new, daunting challenges created by climate change – extreme heat, extreme cold, and severe flooding – require yet more rigorous solutions.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2017/08/170829095056.htm
via Tumblr http://ndbasilica.tumblr.com/post/164990900139
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