On 6/15/06 9:15 PM, in article ,
"mm" wrote:

I believe that. It might be compared to the guano miners of Chile,
who do or did go blind after a few years**. Yet millions of people
walk by pigion doodoo on the sidewalk all the time without going
blind.

Okay, you hooked me. Why did they go blind? Do you have any reference for
that?

Bill
-- Ferme le Bush