[meteorite-list] I'm looking for a link about micrometeorites

[Francesco Moser]

Hello!
Sometime ago someone post a link about micrometeorites and
false-micrometeorites.
In that page there were a lot of pictures about micrometeorites and man-made
microsferules.
I remember tons of microscope pictures about a lot of different alloy
microsferules form various industrial process!

Someone could re-send me this link? 
I cannot find it in my bookmarks :(

Thanks a lot !!!