Fluorescent fixture transformer, ballast, useful?

Hey folks, I'm cleaning out the basement and was staring at a couple of old heavy duty fluorescent fixtures wondering if any of the components inside would be useful for any project. These fixtures worked when they were removed.

Casual observation doesn't show any markings on the outside and I haven't taken them apart at all. Just thought maybe there would be a useful transformer or two, at the least some good winding wire etc.

Maybe it's not worth the effort.

Hi, Even true packrats like me don't keep those :P

There IS wire and iron laminations in there. But they are 'potted' in tar and real messy to get apart...