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5 Field Methods The proposed Yoast Mine area was plotted on a 7.5' USOS quadrangle map, Mount Harris, and then investigated by pedestrian survey. The area was investigated by walking parallel transects with spacing between transects no more than 20 meters. The topography of the area was often steep and rugged, therefore transects often did not follow cardinal directions but followed the local topography. Particular attention was given to high potential recovery areas for cultural resources, such as benches and terraces overlooking intermittent drainages, and creeks or open flat areas. Highly disturbed areas, such as rodent disturbance, roadcuts, and erosional areas, were also inspected carefully for signs of buried deposits. Coverage of the Class III survey in the study area was limited in two areas located in the SWh, Section 16, and NW/. Section 20. Both were areas of steep slopes covered with thick vegetation. The total area not surveyed is less than thirty-five acres. The potential for usage of the area by prehistoric or historic inhabitants is very low. In addition, the steep slopes in excess of 60% grade (>30°) are beyond the angle of repose of stable sediments. When cultural materials were located, the surrounding area was carefully • inspected to determine site boundaries and discover associated artifacts and features. After site boundaries were defined, they were recorded on Office of Archaeology and Historic Preservation (OAHP) forms, located on the 7.5' quadrangle map, site sketch maps were made, photographs were taken, and a site datum was placed. Site datum locations were carefully recorded for easy relocation. Only diagnostic artifacts were collected and cataloged. All other tool locations were plotted on the site map. Results Inventory of the proposed Yoast Mine area resulted in the discovery of seven prehistoric sites, two historic sites, and nine prehistoric isolated finds. All of the prehistoric sites are classified as lithic scatters, containing debitage and an occasional tool, but no features. Both historic sites are classified as homesteads. Six of the prehistoric sites require more data to evaluate site eligibility to the National Register, one prehistoric site and both historic sites are recommended to be not eligible to the National Register. All isolated finds were not considered significant. 5RT863 (MM 25571. This historic homestead site consists of five l09 structures, one standing and four collapsed, one rack and concrete cistern, two earth dams and accompanying ponds, and one large depression. The site is located in a large mountain meadow surrounded by gambel oak and aspen. The ponds were used to collect water from a natural intermittent drainage which runs south down the valley. The largest log structure, which appears to be a cabin, has a rock • wall foundation, consisting of baseball-size cobbles. All other buildings appear to be sheds for animals or supplies, including the only one which is still standing.