Re: lantern mantles

["J. J. Rozental" <josrozen@netmedia.net.il>]

At 01:59 PM 11/18/97 -0600, you wrote:
>Dear Radsafe:
>
>Does anyone happen to know what the typical quantity (mg, uCi, whatever)
>
>of Th-232 is contained in one of the Coleman lantern mantles
>that used to contain thorium?  What is a typical exposure rate
>on contact with one?
>
>D. Steva
>
>

1 to 2 kBq
References: 
1 - Buckley, D. W., Belanger, R., Martin, P.E., Nicholaw, K. M. and Swenson,
J.B, Environmental assessment of consumer products containing radioactive
material, Task 2 report, final NUREG/CR-1775, Science Applications Inc., CA,
1980

2 - Luetzelschwat, J. W. and Googins, S. W., Radioactivity released from
burning gas lanterm mantles, Health Physics, 46, 4, 873/881, 1984

3 - Brits, R. J. N., Measurement of the Th-232 content of gas mantles,
Health Physics 48, 1, 124, 1985

J. J. Rozental <josrozen@netmedia.net.il>
Israel