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1 pete // May 26, 2009 at 7:39 pm
the city routinely pipes liquid nitrogen undergound to cool steam fittings when workers are doing repairs on the lines or digging around them. now that you’ve seen one you’ll notice them all the time!
2 JayJayPowPow // May 29, 2009 at 2:10 am
Thanks for solving the mystery, Pete. Was wondering what all the nitrogen was about.
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2 responses so far ↓
1 pete // May 26, 2009 at 7:39 pm
the city routinely pipes liquid nitrogen undergound to cool steam fittings when workers are doing repairs on the lines or digging around them. now that you’ve seen one you’ll notice them all the time!
2 JayJayPowPow // May 29, 2009 at 2:10 am
Thanks for solving the mystery, Pete. Was wondering what all the nitrogen was about.
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