Princeton had an "ice pond"[1][2] in the early 80's. The project was run by Dr. Ted Taylor[3] (who worked on the Manhattan project and later the Orion spacecraft-- huge nuclear bomb-powered spaceships!). Snow machines made slushy ice that was stored in pond covered with insulation. Water was pumped through the pond in the summer to provide cooling. It worked well and at the end of the summer there was still ice in the pond.

I read about this as a kid reading Freeman Dyson's "Imagined Worlds"[4]. Dyson's commentary is definitely worth reading. (Anything written by Freeman Dyson is worth reading.)

A cheese factory used ice ponds[5] for about 10 years, eventually abandoning them because the ice didn't last through the summer and it was difficult to maintain[6].

[1]: https://en.wikipedia.org/wiki/Ice_pond

[2]: https://www.washingtonpost.com/archive/opinions/1981/08/02/t...

[3]: https://en.wikipedia.org/wiki/Ted_Taylor_(physicist)

[4]: https://books.google.com/books?id=MOC8UJPuvO8C&pg=PA42

[5]: http://www.nytimes.com/1984/06/03/nyregion/dairy-hoards-500-...

[6]: https://www.farmshow.com/a_article.php?aid=15129

I was just about to post the same thing :D

The storage facilities are called Ice House [0]. The large ones stored several thousand metric tons and could last through the whole summer, depending on the climate.

0: https://en.wikipedia.org/wiki/Ice_house_(building)

A whole industry was created based on this:

https://en.m.wikipedia.org/wiki/Ice_trade

Great 99pi episode about this: http://99percentinvisible.org/episode/frozen-assets/