And she does not add a great deal to the considerable work which has been done on the commercial activities of Joseph Duveen, other than providing an interesting offhand comment, on Duveen's radical cleaning of the Elgin Marbles, that he merely replicated his tendency to overclean
"A slightly dirty filter will pick up more debris, so you don't want to overclean
them," Fowler says.
(This is a critical step to the process, as it is possible to overclean
the casting and render any discontinuities undetectable.)
This new Chino mine copper is reminiscent of specimens both from the old Ray mine, Arizona, and from the Itauz mine, Kazakhstan, except that Itauz specimens (and some Ray specimens as well) typically show a burnished, old-penny copper color, whereas the Chino mine specimens are (to my taste anyway) overcleaned
and thus rather too new-penny bright.
Ordinary, non-conditioning shampoos can contain harsh cleansers that strip hair of natural oils, which results in overcleaned
, unprotected hair.
"Hair that squeaks signifies bad clean; it can mean it has been overcleaned
, stripped of natural oils and just plain damaged," she adds.
Also, the filter should not be overcleaned
. Rinse the media only enough to allow good water flow through the filter.
The uniform color is that of pure, clean copper, with a good though not brilliant luster; the specimens have been cleaned ("conserved" as they say in numismatic circles) but not overcleaned
. Mike Bergmann got about 10 of the la rgest clusters, and Dave Bunk offered the rest at his Main Show booth.
He says it has been overcleaned
but is confident experts will soon be able to declare it an Old Master.
'With antiquities and with African and Oceanic art, what is really important is to understand what a real surface is, and whether something has been overcleaned
. This is so important, and yet you're not going to get this from a piece of scientific analysis.