[Ferro List] e-spheres=cenospheres ?

[tp sing]

Hi chuck,
The e-spheres of Ability are perhaps the same as cenospheres - The lighter
fraction of fly ash consisting of 10 - 600 micron particles(hollow spheres)
 often scooped from ash ponds. Google for Cenospheres and you'll find plenty
of Info.

-- 
T.P. Singh

Director (R&D),
Construction Research Centre,

Ph.: 91-11-26802388
http://www.geocities.com/tps_har
E-mail: sing.tp at gmail.com