Quote:
They aren't sure exactly what the white material is even now, but it's a precipitate of the electrolysis process used to clean the cannon previously. Instead of cleaning it, somehow the combination of caustic chemicals in the electrolysis tank combined with the non-standard metal composition in this cannon to create carbonate blooms that are now marring the surface.
To remove the white substance and prevent it from reoccurring, researchers have enlisted another chemical, a 5% solution of formic acid and deionized water. It removed the chalky deposits without harming the bronze underneath. They applied the solution with cloths on the outside of the cannon and a tennis ball on a stick to apply it down the full length of the bore. The white substance disappears on contact, but conservators had to apply the solution in several coats over the course of months. This process was done in view of the public. Now that it is complete, the cleaned cannon is back on display at the Alamo Museum.
One hopes this chemical doesn't suffer from the law of unintended consequences like the last one did, but ultimately the conservation team preferred to roll the dice with a dilute organic acid the cannon might have brushed against on its own rolling over an anthill or stinging nettles or a pineapple rather than allow the white substance to proliferate with potentially damaging long-term side-effects.
Because the team's work on the cannon occurred during regular museum hours, enabling numerous school groups to observe the process, Lanham says their preservation efforts also had an invaluable educational impact, inspiring the next generation of historians and conservationists.
In the above video, the narrator says "may have been one" of the guns at Medina. So, apparently, they aren't sure.aalan94 said:
They claim it was used in the Battle of Medina, which is the climactic event in my book, although I'm not sure how they know that. It's certainly plausible, but the sources on which guns where there are really thin to my knowledge.
FTACo88-FDT24dad said:
That come and take it cannon is really small. When I took my son to the museum in Gonzales I was surprised how small it is. The image on a standard Come and Take It flag is bigger than the actual cannon.