New to the forum, and am going to try posting in a few other video-related forums as well; but am desperately trying to track down any information regarding the mass production and/or duplication of vhs tapes.

I literally have not been able to find any hard information on the subject, and know that the knowledge HAS to exist out there due to the high volume of vhs tapes that exist in the world that obviously had to have been mass produced at some point. I am specifically interested in the machinery involved and the process of production or duplication, yet either process would obviously require the same sort of mass-recording hub of hundreds or thousands of tapes all recorded at one time while a 'master' tape or video file would have been played.

I have absolutely no leads on the subject and was hoping that someone here might be able to shed some light or link me to somewhere or someone who might.