This tank was I believe 20 feet high and maybe 12 feet in diameter.  As you can see it was riddled in a wet rust of sorts.  The idea behind this ugly, ugly job was to remove all the rust so that the entire inside could be re-epoxied and made to be new again.  Before any new epoxy could be applied, ALL the bb-sized holes needed to be filled after the cleaning.  You can see from the outside shots of the tank that rust was already making its way to the outside of the metal.  It was only natural that many “soft” spots in the metal were opened up with my 3500 PSI Turbo Nossle.  A perfect example of a surface that desperately needed to be properly cleaned before the application of a particular material.