Greetings,
I started out in mainframe work in the 80's and programmed in COBOL/JCL/CICS up until Y2K and a little after... Started in the US Navy, where if you know your history a Navy Admiral ... Grace Hopper, was the lead on the team that developed COBOL. I also know Hollerith code... language of the punched cards.. Please check yuor PMB for more details... Kind Regards...