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NOTICE has been «P™^ broa dest possible »«><• Distribution Category UC-11 ability. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes a»iy legal lir ility or responsi bility for the accuracy, completeness, or usefulness of any information, appc 'us, product, or process disclosed, or represents that its use would not infringe privately owi. rights. Refer ence herein to any specific commercial product, process, or service by trade ni. *e, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom mendation, or favoring by the United States Government or any agency therecf The views and opinions of authors expressed herein do not necessarily state or reflect osc of the United States Government or any agency thereof.

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The mantle of a gas lantern contains about 600 micrograms of toxic beryllium metal. Most of the beryllium is volatilized and becomes airborne during the first 15 minutes of use of a new mantle. The inhalation of this quantity of beryllium can be hazardous.