The area of the PBE 68 occurrence is underlain by undivided sedimentary rocks of the Triassic Brooklyn Formation and Devonian to Permian rocks of the Knob Hill Group. These are intruded by dikes, sills and plutons of the Eocene Coryell Plutonic Suite which are syenitic to monzonitic in composition. The Paleozoic rocks, consist primarily of greenstone, chert, argillite and limestone.

The PBE 68 occurrence consists of syenite and skarn hosting massive pyrite, chalcopyrite, sphalerite and skarn with disseminated chalcopyrite and molybdenite. An old adit is marked at the site of the occurrence.

Less than 100 metres to the east of the skarn showing is the PBE 14 uranium occurrence. This uranium occurrences was designated by Cronus as secondary autunite in fractures. While visiting the SD claims in 1970, McCammon described finding uraninite and uranophane in pegamatite within Grand Forks Gneiss but this is likely to occur more to the east.

In 1970 or just prior thereto, Boundary Exploration Limited conducted trenching on their SD claims. In 1971, Cronus Minerals Limited conducted an airborne magnetometer and scintillometer survey over their SD and PBE claims.

In 1977, Consolidated Boundary Exploration Ltd. conducted mapping and collected 4 samples on the U2 claims which covered the old PBE occurrences such as MINFILE 082ESE138, 139, 140, 218 and 219. In 1978, Consolidated Boundary conducted a program of stripping, and rock and soil sampling (103 soils). They also conducted 4 kilometres of ground magnetometer and scintillometer surveying. During 2008 through 2012, Grizzly Discoveries Inc. completed programs of geochemical sampling, geological mapping and ground geophysical surveys on the area as the Attwood area of the Greenwood property.