Thanks for the info. He said beekeeper that had lots of hives would put all the supers in a shed or barn close it up and burn ponds of sulphur to keep the moths out. No V-mites and no SHB back in the day.
I'm very lucky to have such a wonderful mentor. He lives by himself and I visit him once or twice a week, we talk bees and life, I love him dearly.
dan