[Cob] Portland Oregon Cob source

[Michael Montagne]

I liv in Portland and I'm building a cob oven.  The base is done, the fire
brick is laid, but I'm having trouble with a good source of clay rich soil.  I
tried a couple of test bricks from my yard and the each failed.  All I need is
a couple of wheelbarrow loads (I think).  Where could I look that is in
reasonable proximity of Portland?  I could also use a bit of time from an
experienced builder regarding mixing, etc.  Any suggestions would be
appreciated.


-- 
Michael Montagne
michael at themontagnes.com
http://www.themontagnes.com