Green Redwood is Heeeaaaaaaavvvvyyyy!!!!

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Here ya go:

http://chimneysweeponline.com/howood.htm

The hardest ones are simply amazing how dense they are...which would equate to some incredible burning wood....if they'd even ignite or burn...

http://www.woodfloorsonline.com/techtalk/hardns.html

They'll burn all right.
I got a load of cutoffs of azobe ( african ironwood) some years ago. What I couldn't use for turning, went into the wood furnace that heats my house. Talk about BTUs.