The Association for Mexican Cave studies seeks material for its
forthcoming number 37 of the AMCS Activities Newsletter, for 2014.
Articles are sought on any significant exploration or study of Mexican
caves or karst. Articles may be accompanied by color photographs and
should contain all p
An N100
(http://www.staples.com/office/supplies/StaplesProductDisplay?storeId=10001&catalogIdentifier=2&partNumber=422425&langid=-1&cid=PS:GooglePLAs:422425&srccode=cii_17588969&cpncode=33-265475753-2)
or similar mask should be effective enough for most normal applications and
won't be particula
This new thread will self-destruct in 48 hours
There is an article on the web, suggesting that dust mask are ineffective
at preventing the wearer ( caver ) from breathing in dust particles.
http://news.discovery.com/human/health/face-masks-provide-false-hope-against-pollution-140228.htm
