8 - means 8 casting 'events' with that mold. No telling how many blocks were cast per 'event'. But someone might know what an average number of blocks cast per 'event'. 'Event' isn't the proper term, but it's all I can think of just now.

Tom

"Everyone should believe in something; I believe I'll go fishing."

-Henry David Thoreau

Men and fish are alike. They both get into trouble when they open their mouths

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