It amazes me that a corroded/thin area of a boiler can be cut out like this, a new sheet of steal can be welded in it's place and be just as strong if not stronger than original. That the weld if done right can expand and flex just as if it wasn't even there. At a boy to today's technologies and workers skills to bring these beauties back to life.
Pic from the Nashville Steam 576 Facebook page.
