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- Path: sparky!uunet!crdgw1!rdsunx.crd.ge.com!Ligon@macgw1.ge.com
- From: Ligon@macgw1.ge.com (Woody Ligon)
- Newsgroups: sci.physics.fusion
- Subject: Re: Coleman Mantels and Thorium
- Message-ID: <1992Jul24.143053.23252@crd.ge.com>
- Date: 24 Jul 92 14:30:53 GMT
- References: <9207231834.AA07357@sleepy.network.com> <1992Jul23.222407.18064@anasazi.com>
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- Organization: GE-CRD
- Lines: 30
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-
- In article <1992Jul23.222407.18064@anasazi.com>, john@anasazi.com (John R. Moore) writes:
- >
- > Keywords:
- >
- > In article <9207231834.AA07357@sleepy.network.com> logajan@SLEEPY.NETWORK.COM (John Logajan) writes:
- > ]I got four sets [of Coleman Lantern Mantles], just in case it is my last chance to
- > ]get radioactive material on the cheap.
- >
- >
- > Smoke detectors have a very hot source in them. My counter goes bananas
- > (many hundreds of counts per minute) when placed within an inch of them.
- > Almost nothing farther away.
- >
- >
- I have a small hand-held Geiger counter which I take with me when my wife
- drags me off to antique stores.
-
- The place to look is in the old chinaware section. It turns out that the
- "fiesta ware" pieces which are very bright orange got that way because they
- use a uranium containing glaze. The uranium is natural abundance, of course,
- but the purity must be pretty high because the activity is quite significant.
-
- The New York regulations on "Ionizing Radiation Protection" (12 NYCRR 38)
- list this as an exempted use as follows: "Source material contained in any
- of the following products: Glazed ceramic tableware, the glaze of which
- contains not more than 20% by weight of source material;....."
-
- Woody Ligon
- standard disclaimer applies
- (ligon@macgw1.ge.com)
-