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Re: [APD] EcoBio Rocks

Found this patent:

"A concrete product prepared by mixing a cement paste containing microbial 
cells comprising Bacillus subtilis, Bacillus thuringiensis and
Bacillus sphaericus, in a ratio by mass respectively of 0.1 to 50:0.1 to 
50:0.1 to 50, with crushed natural stones and water, and then shaping, 
curing and hardening the mixture.

The concrete product of claim 1 wherein said crushed natural stones have a 
diameter of 2.5 to 10 mm."

Hmmm, it looks like Bacillus thuringiensis and Bacillus sphaericus are toxic 
to life. No wonder they removed them for the EcoBio rocks. :-)

Stuart Halliday
200 Million years in the making...
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