All nice theories. You couldn't break up our clay with a pick. Sorry. How about dynamite! The commercial back-hoe was more practical. How do you slightly moisten 100' of clay overnight? Give it some thought, Rick. I have been there - done that. I could build a swimming pool in this clay. Heck, it would NEVER drain! Perhaps you would like to research "Yazoo Clay". I don't think you folks in WA have a clue what we have down here. Sorry, Rick. I don't mean to be "difficult".
