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A comment on 'Liquid gold': students make world's first brick out of human urine. Parent comment

Re:'Liquid gold': students make world's first brick out of h... by viggity on Thursday October 25, 2018 @01:01PM (#18302407)
Limestone is a 3 on the Mohs scale (1 = talc, 10 = diamond).

A kiln fired brick is a 5 to 7 depending on its constituent parts.

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Re:'Liquid gold': students make world's first brick out of h... by wulfmann on Friday October 26, 2018 @10:27AM (#18309485)
What is a beet's strength on the mose scale?
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