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A comment on Making a Three-Stone Hearth as Efficient as an Improved Cookstove. Parent comment

Re:Making a Three-Stone Hearth as Efficient as an Improved C... by rwmj on Monday December 21, 2015 @12:26PM (#10772178)
I found these were quite good overview articles:

http://www.lowtechmagazine.com/2014/06/thermal-efficiency-co...

http://www.lowtechmagazine.com/2014/07/cooking-pot-insulatio...

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