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The letter about my magic machine from San Francisco was probably from Paul J.F. Schumacher. He was referring to the electrolysis set up. I introduced it to INDE but it wasn't my idea. At Fort Fredericka NM Joel and I had a lab assistant named Bob Taylor. We had been cleaning iron artifacts by heating them in a pot-bellied stove, dunking them and pounding the crusts off, followed by brass and/or steel brushing. Then we would coat them oil to minimize rusting. After Joel left, I got down a copy of Plenderlieth's volume on museum object treatment. I saw a very complex arrangement of electrical equipment that Plenderlieth used for metal objects. Shaking my head I showed it to Bob. Bob was an island man, part of Cap'n Taylor's clan [deleted bio data] whose background was shrimpboating. After about 15 minutes he turned me and exclaimed "Hell, Cap'n, that ain't nothin but a gussied up batt'ry charger!". He also believed that sodium hydroxide was "plain ole lye." I got the stuff and we used a small aquarium tank to clamp the anodes to. It worked beautifully! I sent one of those [NPS] forms to credit Bob. I think Stan South was fielding those then. A downside-- I'm not sure I didn't uffer some detriment from the gas that the process gave off. [sic ;) ? ]
The Ultrasonic Cleaner was Bruce's [B.B. Powell] introduction. It was great for encrusted button and ceramics and other materials. It worked on small metallic objects too. We had to pare down our expectations for many metal objects though: the transducers sometimes broke! It's hard to recapture exact scenes so I don't remember how well we coped with continuing to use process. Maybe Bruce remembers.
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NPS Archeologist Paul Schumacher, circa 1955 (top), NPS Archeologist B. Bruce Powell, circa middle 1960's (bottom).
On August 13th, Smokey added:
...My discussion of the ultrasonic device [in the last email communication excerpted above] was in terms of the circumstances that then prevailed. Our appliance was quite small; I would guess about 8"x11" at most. (Bruce may remember it differently). I haven't kept up those babies. I have seen the ones jewelers use to clean diamond rings, and my Braun 7800 electric razor's head cleaner is a mini ultrason. When I saw the illustration in your blog of the ultrasons used today, I realized that the puny tasks we required then would be pieces of cake. now.
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