Hello all,

I've received 3 reels of Ampex 456 1/4"  that have some white growth that
seems more 'salty' than 'mouldy' and wondering if anyone has some ideas on
whats going on here?

I have posted a picture of tape on the reel here:

The tapes were recorded in Dallas in 1977 and have been (i believe)
non-environmentally controlled storage ever since.  The boxes are the old
406 type and dont have any growths at all.

I look forward to reading your comments.

Many thanks,