You probably are aware, but for any who aren't: When you use wood chips like this, it breaks down over time and becomes very rich, fertile soil. It isn't a quick process, but I'm at a point where I dig into my chip area each spring, run it through a soil sifter and take the rich organic soil...
Love it! Don't spread out the chips. That is chicken work!
Those are T-posts which are used to hold up various types of wire fencing. You can find them at most hardware or farming stores.