Hi. 10-14 years is a very long period, so I believe that you wont be able to get printable (if any) negatives. However, my guess will be to extend the development times by 30-50 % in a high speed yeld developer such as Microphen or Ilfotec. To keep the fog levels down (as possible) you can try adding a few grams per liter KBr to the working strength developer Evgeni. PS: if you decide to try this, I will be interested to hear about the results.(posted 9385 days ago)