It is sure tough to get anything from Alaska because so much of the area is heavily forested and mountainous making the access difficult. The miners are more focused on valuable resources like gold. It can't be helped to wonder if there are any agates and thundereggs sites have been ignored/overlooked.
    There are some agates found along Nowitna River and they had been passed as Carnelian agates mainly due to the fact that they look similar to those coming from Oregon.