Indiana Jones and the Last Crusade Easter Egg - Barrels of "Carboneto"

Carboneto is Portuguese for Carbide. Carbide as in Calcium Carbide. It's in Portuguese because they're off the coast of Portugal. Which fits the rest of the Portuguese warning on the barrels for Hazardous Chemicals. Calcium Carbide plus water plus spark/flame equals huge explosion, which explains why the boat went up in a huge explosion when the cans came falling down. Now, it might be that Lucas got the idea for "Carbonite" from the Portuguese Carboneto, but you're really reaching with this one, and unless you can find documented evidence of the Filmmaker's intentions, you're seeing things that aren't there.