On Fri, Nov 4, 2011 at 9:50 PM, Jed Rothwell <jedrothw...@gmail.com> wrote: > Here is an interesting comment in the Wikipedia discussion from someone who > claims he or she was present at the Oct. 6 test. Does anyone know what > "kettle stone" means? Deposits from evaporated water?
Yes, also called boiler scale: http://www.magnumarchive.com/c/iconographic-encyclopedia-volume-5/Storage-Water-Its-Purification.html T
