[ricree]

Unless I'm mistaken, this strikes me as a really incredible claim. To the best of my knowledge, Rome didn't make much use out of cast iron. Iron has a very high melting point, it's not something that people were just casually melting. There were a few exceptions, but my understanding is that Europe mostly didn't use cast iron until late in the middle ages.

The idea that some random resort town was casually melting iron and hauling it around to fill cracks strikes me as really implausible. Some other, more easily melted metal perhaps, but not iron. Not unless my understanding of Roman metallurgy is really mistaken.

[gfxxxx]

Not only that, but the thermal stress of pouring molten iron on wet, cold and cracked stone.... call me skeptical