Borrowed from the U.S. site.
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Our investment in infrastructure is paying off...

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The math wizard figured as follows: tensile strength of 2 inch chain = 200lbs, max load of train car is 197000lbs. If we ignore the zeros on the train we get 197lbs. using 4 wraps of chain at 200 gives 800lbs or a factor of safety of 4... oughtta hold, and we can take the pillar right out!
 
I wasn't saying it was good for the river, only better than the problems oil would cause. The next train may be oil.

There are 2 bridges on the BNSF mainline from Seattle to Vancouver that I go under with my boat and each time I hope I get through before they fall down.

Real scary when you are under them with a train going over them.
 

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