Hate to see stuff like that!
Epoxy would be good, but I'd drill some 19/32" holes and epoxy in some 1/4" threaded screw shaft to act as dowels at the big breaks. The threads really let the epoxy bite into the surfaces and the doweling help reinforce the joints.
With the epoxy you can get a bit sloppy with the alignment of the holes and such and still get a strong bond.
Also looks like making a new handle is well within your wheelhouse!