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hlthe2b

(107,635 posts)
3. I'd bet few understand how packing in sawdust allowed them to ship "as far away as Jamaica"
Fri Dec 28, 2018, 07:05 AM
Dec 2018

I was interested in how ice boxes-- pre-refrigeratiion-- worked, how ice was shipped and maintained, and actually researched this as a child.

Air trapped between the particles of sawdust kept the warm, outside air from melting the ice. ... And the more tightly the blocks were stacked, the harder it was for warm air to penetrate the stack and melt the ice. Basic physical properties, but not necessarily so obvious...

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