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To: cinFLA
The quote was from the original Harper's article. He didn't purify the thorium, he isolated it. Mantles are made with thorium nitrate among other compounds. Upon cure (first burn), it is converted to thorium oxide.
106 posted on 03/17/2004 3:48:34 PM PST by Cooter
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To: Cooter
Like I said, all he did was create a pile of ash.
109 posted on 03/17/2004 3:57:24 PM PST by cinFLA
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To: Cooter
The quote was from the original Harper's article. He didn't purify the thorium, he isolated it.

Better read the quote.

110 posted on 03/17/2004 3:59:10 PM PST by cinFLA
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To: Cooter
He didn't purify the thorium, he isolated it.

Per the figures in the article, his 'product' had a lower concentration of thorium than the original lantern mantels.

111 posted on 03/17/2004 4:02:42 PM PST by cinFLA
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