On Thu, 30 Dec 2010 06:10:06 -0800, Winston
wrote:


I need something with a higher mechanical
advantage and small jaws that permit waggling
the chunks free of adobe clay soil.

Sorta like a post-hole digger with 2" wide
blades and an adjustable jaw.


My first thought was an appropriate pair of blacksmith tongs, but they
wouldn't cover the gripping range you're looking for. A bit of cutting
and welding on a pair of these might give you what you're looking
for...
http://www.channellock.com/480-BigAZ...Jaw-Plier.aspx

--
Ned Simmons