I dunno. Not much comes up on a google search. But McMaster Carr carries
Aluminum Oxide abrasives and they say these are good for grinding and
polishing high tensile materials such as carbon steel.
http://www.mcmaster.com/#aluminum-oxide-powders/=lz91pt
Looks like blasting media.
Dave
In a message dated 3/21/2013 3:52:22 PM Central Daylight Time,
dave@ranteer.com writes:
> hi.
>
> this came out of my dadbs workshop. hebs no longer alive, so I canbt
> ask him.
>
> anyone know what this stuff is? whatbs it for?
>
> http://www.ranteer.com/misc/
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