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Discussion Starter #1

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Believe it or not that is pretty safe. We built that stuff in lab and used it. The radioactive materials are less that those found in a standard Coleman Lantern Mantle.
 

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Discussion Starter #3
I thought Coleman stopped making those in 1996....
" Earlier, Theresa L Aldridge wrote:
> I am preparing the proposal for my thesis, "Substitution Of
> Natural Thorium In Consumer Products And Resulting Dose
> Consequences To The Public".
>
> I would like to survey radcon/HP folks to obtain current
> information and/or leads, relative to: the different kinds
> of consumer products being used, and more importantly... any
> "substitution products or materials" being used to replace
> natural Thorium.
>
> [email protected]
> (509)376-5865

* To: [email protected]
* Subject: Re: Natural Thorium-Lantern Mantles
* From: Jack Couch <[email protected]>
* Date: Wed, 10 Jan 1996 13:59:34 -0500

>
To Theresa and others who may be interested, Coleman recently
switched from thorium-based to yttrium-based mantles (marketed
now as Gold Top). Coleman claims that, not only are the new mantles
non-radioactive, they are structurally stronger (although maybe not as
bright).
Worldwide, nearly all versions of the incandescent mantles used in
lanterns still use thorium as the primary ingredient. Thorium-based
mantles under other brand names can still be purchased at Sear and
Target stores and at some surplus stores.

According to Randy May at the Coleman company, their thorium mantles
contained 300 mg Th-232 corresponding to about 1.2 kBq (33 nCi). A
quick calculation shows that the dose over 50 y to bone surface tissue
would be about 24 mSv (2.4 rem) for a mantle if injested.

The Coleman Company (Wichita, KS) used to distribute a pamphlet
called "Mantles by the Million." Call their customer service department
and ask for either Carolyn Britton or Randy May. If you are especially
charming and persuasive, I'm sure they will provide you with a copy of
the pamphlet plus answer questions about mantles that should be
useful in writing your thesis.

Gamma spectra of mantles and some dose information have been
published in the following articles:

H. Mohammadi and S. Mehdizadeh, "Re-identification of Th-232 content
and relative radioactivity measurements in a number of imported gas mantles,"
Health Phys. 44 (6), 649-653 (1983).

Rudolf J. N. Brits, "Measurement of the Th-232 content of gas mantles,"
Health Phys. 48 (1), 124 (1985).

Jack G. Couch and Kelly L. Vaughn, "Radioactive Consumer Products
in the Classroom," The Physics Teacher, 33, pp.18-22 (Jan.1995).

Theresa, the third article contains material from Kelly's senior project. It
includes information and gamma spectra for mantles (Th-232 and progeny),
Fiestaware dishes (both U-235 and U-238 are identified from the U3O8
in the orange glaze) and NOSALT (K-40).

Good luck with your project! Jack
Jack Couch
Bloomsburg University
[email protected]
"Never assume the obvious is true"
William Safire, in -Sleeper Spy-"
 

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Discussion Starter #4
Either way I don't think U-238 makes a good children's toy. :)
 

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sure it does, every little kid wants to glow on there own
 

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I have lawn darts. I will keep them.
Yeah, there's a nice target sitting under the tree across the street! :D

j/k..... Let me know how the repair goes...

Peter M
 

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Peter M said:
Yeah, there's a nice target sitting under the tree across the street! :D

j/k..... Let me know how the repair goes...

Peter M

Peter, there is a thread for that particular jousting.. LOL. She has moved to the driveway now.

She will be all good.

No problems.
 

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Carlover007 said:
As holiday times come around, I know some of you are looking for gift ideas, well...
Here is a list of the most dangerous toys of all time:
http://www.radarmagazine.com/features/2006/12/toys.php
Check out toy # 2:
:uppoint: Safe radioactive materials. Yep every kid should have a nuclear waste dump in his or her toy box.
 

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Nativedetroiter said:
I have lawn darts. I will keep them. I wonder if there is a demand for them?
I loved my jarts too. Of course my parents were the type to actually make sure I understood the dangers of something, instead of just saying "Here you go."
 

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Whining Intakes Rock
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we put many a hole in a tree with those. :D
 

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i have lawn darts from the "boom" my dad even had one lodged in his calf.... lmao
 

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sinhumane said:
i have lawn darts from the "boom" my dad even had one lodged in his calf.... lmao
I had one of those lodged right under my eye when I was two. One of the few moments I remember at that age...
 

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Atomic

So.....THAT'S how north korea got the bomb eh? Very clever.
 

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CougarXR/7 said:
So.....THAT'S how north korea got the boob eh? Very clever.
Uh-huh-huh-huh... you said boob.
 

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ShadowDragon said:
Uh-huh-huh-huh... you said boob.
hehe cought it before he edited it!!
 

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awdRocks said:
hehe cought it before he edited it!!
Yeah, him and Freud need to get together some time. ;)
 

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DennisIsEvil said:
:uppoint: Safe radioactive materials.
I have something radiocative and glowing in my pants right now actually. I think it's safe.
 
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