masks?

[John Twilley <jtwilley@xxxxxxxxxxx>]

Susanna,

Unlike the various asbestos minerals which can lead to an
increased risk of lung cancer and lead paint dust which may
be absorbed and result in lead poisoning, alabaster dust
alone is not likely to lead to critical health problems.
However, fine dust of any kind is an irritant.  Individuals
differ in their tolerance toward things like this.  Someone
with other health problems, particularly lungs irritated by
factors such as smoking, asthma, pollen allergies, etc., may
not be able to tolerate anything more.  Habitual exposure to
this dust may tip the scales toward episodes of poor health
for them.

Alabaster is chemically the same as gypsum or plaster of
Paris (after it has set).  Despite what one respondant said,
it does not set-up in one's lungs.  It is slightly soluble,
and so its fate in the sinuses and lungs is to be dissolved
and ultimately swallowed.  You should consider that natural
alabaster may contain small amounts of other minerals,
particularly in the colored varieties.  These may not be as
benign as the alabaster itself. Without the means to be
certain, you would be better off treating all fine dusts as
potential health hazards.

John