Beech bark disease resistance

Disease-free beech trees have been observed in infested stands throughout the range of beech bark disease (BBD). If you see a beech tree at least 20-30 cm (8-12 inches) in diameter that appears healthy and free of beech scale, while trees around are dead and dying of the disease, it may be a resistant tree. Locating these trees will be important for American beech breeding programs, or for in situ conservation of resistant individuals. We're seeking records of putatively resistant trees, including photos of the whole tree and the bark.

Include in this project beech trees that have:
1) smooth bark, free of cankers,
2) no sign of tiny pink fungal fruiting bodies
3) very little or no scale insect (white secretions)
4) trees around it are dead, dying or deformed by BBD

Here's an article abut managing for resistant beech trees: http://northernwoodlands.org/articles/article/beech-party-woodlot less ↑