Hank wrote:
chagoi, I hope you can learn form you Lenape ancestors. DO NOT use
local shale around your campfire. The gases and moisture trapped
between the layers of rock expand and "Mak-um boom boom". It is very
dangerous.

Not really a problem in my area. I live in the "Cement Belt" area of
eastern Pa. I mostly have to deal with clay mixed with a little bit of
limestone. The "Slate Belt" area runs about 10 miles north of me. So the
shale area begins about 5 miles north from me.


Chagoi
http://ourkoipond.com

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