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III. METHODOLOGY • <br />3.1 REVIEW OF LITERATURE AND SITE SURVEY FILES <br />As mentioned in Section 1.3, the literature and site survey file reviewe <br />were to have been conducted prior to the field investigation. Due to lack of <br />lead time, however, the review was conducted during and after the field in- <br />vestigation, resulting in duplicate reporting of several sites already on <br />file. The results of the review are fully described in Sections 4.1 and 4.3 <br />of this report. <br />3.2 FIELD TECHNIQUES <br />The Colowyo Mine site and the railroad corridors required somewhat <br />different field survey techniques. The mine site exhibits relatively little <br />relief or distinctive topographic features and it was consequently more <br />difficult than usual to plan traverses of the area so that they did not <br />overlap. The usual technique was to space crew members from 50 to 100 feet <br />apart along a straight line and traverse an area at right angles to that • <br />line. The length of any one traverse was determined by natural or cultural <br />boundaries such as fence lines, roads, or gullies. This technique was used <br />to cover the entire mine site. Some archeologists have suggested that <br />the spacing between members of a crew should be reduced to 25 feet in open <br />country and less in areas of heavy vegetation. While this may minimize <br />the possibility of missing a site, it is felt that the coverage given by <br />the field techniques employed during the present investigation was sufficient <br />to detect any sites larger than those represented by a few flakes. Also, <br />closer spacing of crew members would have required more than 30 man-days <br />per section at a cost much higher than the 5 man-days per section figure <br />used in the cost estimate for the project. As it turned out, heavy <br />vegetation cover in parts of the mine site increased the survey time to an <br />average of approximately 8 man-days per section. It is believed that the <br />higher cost of closer spacing of crew members outweighs the marginal benefits <br />that might accrue, at least in the present case. Whenever some evidence <br />of cultural occupation was encountered by one of the crew, the other crew <br />members made an intensive search of the local area. If more than six • <br />