I found this site: http://www.krysztalowy-swiat.pl/_a_index.htm and there is that something caled "Salt Cavern" can help with my asthma problems. Did you heard about this ?
Mayby do you know where are in US "Salt Caverns" ??
i dunno about that but saltpipes use da same technology,search for salt pipes on the internet an c wot comes up. they definately work
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b blonde b happy