[78-L] Lamination question

[Robert M. Bratcher Jr.]

What was that core (in a laminated disc) made of & what were the outside surfaces made of?



>________________________________
>From: David Lennick <dlennick at sympatico.ca>
>To: 78L <78-L at 78online.com> 
>Sent: Friday, February 10, 2012 10:14 PM
>Subject: [78-L] Lamination question
>
>Did we ever determine whether there was graphite in Columbia laminated 
>pressings, particularly in the 40s? I'm cleaning a wartime set (Teddy Wilson & 
>Billie Holiday) and I'm amazed at the amount of black stuff that comes off the 
>edges.
>
>dl
>
>