WENAHA TUCANNON WILDERNESS, WASHINGTON AND OREGON.

A geologic and mineral survey conducted in the Wenaha Tucannon Wilderness, southeast Washington and northeast Oregon, indicates little promise for the occurrence of mineral or energy resources. Thin seams of low-grade coal possibly occur in the subsurface in the southeast corner of the wilderness. Additional study of the pre-Tertiary rocks north of the wilderness might reveal important features to aid in further evaluating the pre-Tertiary rocks in the northern tip of the wilderness.