They could have been used as part of a tumbling process to "deburr" soft or
sintered metal parts.
----- Original Message -----
From: "James Brothers" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, July 29, 2003 11:38 PM
Subject: Re: Glass Balls
> They might also have been used in mechanical mixing of the bricks.
Although again glass
> might cause problems.
>