[QUOTE=Gerald C Koch;1394858]You would need to store film in a deep salt mine to reduce cosmic rays.QUOTE]

J. S. limited or was that unlimited but a largely one man business used to offer this service free of charge to the right or was that wrong people. He insisted they stayed with the film all the time

Fortunately J.S. went bust in 1953. Good news sometimes when that kind of service disappears