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wrote:

Please be aware that suspended (in the air) wood dust is potentially
explosive when exposed to ignition sources, such as unvented heaters.
Consider the use of either a sealed combustion or direct vented heater
when heating areas where wood dust is present.
Ashoke - heating.products.bz

While this is true, the density has be enormously high for it to happen. Do
you have a real-world example of it happening in a workshop outside of a
dust collection system? Or even inside of one in a small shop?

--
--John
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(was jclarke at eye bee em dot net)