[log in to unmask] wrote: > *I don't _think_ BBH was abrasive blasted. I remember looking > into some sort of blasting process (using crushed walnut shells and > crushed Clorox bottles) and both were rejected for fear of > discoloring the stone. I don't remember discussion of glass beads as > blasting media. The Ottavinos wanted to grind the entire building > down by 1/8", but nobody bought that, either. > * Dear HC, I was the one executed a series of test mock-ups. It was selected glass beads, very small glass beads. Entire building was treated the following year season by Ottavino. It was all kept kinda hush-hush as at that time abrasive blasting was a taboo subject... predates micro-abrasive low-pressure masonry cleaning procedures. I am not sure if you were still there, or not. ][< -- Orgrease-Crankbait <http://orgrease-crankbait.blogspot.com/> Video, audio, writings, words, spoken word, dialogs, graphic collage and the art of fiction in language and literature. -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html>