Geoff,<p>This is what I got so far today about the Diamond situation.<p>Diamond is owned by Meyers who is owned by Swenson Spreaders, and the Louis Beckman Company in Cleveland owns the entire group. Main production of plows are done at Meyers and Swenson makes the boxes. There is possibly some overlap somewhere here.<p>I could not get any hard information concerning if the companies are publicly held or private. My guess is private.<p>I know that Gledhill owns American Road Machinery and that Douglas Dynamics owns Fisher and Western and Armco I believe is the owner of the entire group. It may go higher but I don't know. Public or private, i don't know but I'll keep digging.