I saw this stuff at a grocery store the other day. The maker's mesquite lump got an OK review but I couldn't find anything on the oak stuff, so I picked up a bag for fun even though it was kind of stupid expensive ($13/6.6 lbs).
I found one piece of plastic in the bag, looked like some kind of braided line. The bag did have a lot of big pieces, but probably too much chips and dust to bear unless the price came WAY down. But the quality of the fuel looked good and there were no weird smells.
I'll burn some soon and follow up.