The 1/4" lag bolts for the railing supports in the front concrete porch
steps have rusted away leaving headless 1/4" lag bolts imbedded in the
concrete. How do I remove whats left of the bolts? I attempted to drill
them out using an 1/8" drill bit but it could get started.

How can i remove the bolts? Some of the bolts are not broken off even with
the concrete some of them are headless and bent slightly to one side.

Tom