Frozen lower left alternator bolt

Tooljunkie thank you for the info. Did put the air hammer to it at the outset. To everyone else...all the other bolts are free. I do understand what some are saying regarding the suggestion of, “just snap it, replace bolt, gaskets, and all. Yes, and that will be the end as it has been the plan since the outset, just trying not to snap it as that is the way I am and with my luck it will snap just inside the block. The “funny thing” is that I have taken the entire front end apart and not one bolt or nut was even remotely frozen and the struts came out easy peasie, except this, this one stinking bolt. I am going to try drilling a hole and some penetrating fluid. Will let you know how it turns out. Thanks again.