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<br />I <br />i <br />C~ <br />I, <br />I' <br />It <br />I, <br />l' <br />1' <br />1 <br />~~ <br />y <br />,~• <br />.' <br />of long distance travel, and correspondingly more aggressive. The theme of aggres- <br />sive interaction between aboriginals and increasing numbers of Ang]os intensified <br />throughout the nineteenth century, culminating in the expulsion of the Ute from the <br />region rn the 1880s (Reed 1984). <br />Although Protohistoric/Historic Numic sites evince many traits common to <br />other cultural traditions and time periods, several traits have been identified that <br />appear to be reliable indicators of Ute or Shoshone occupation in northwestern <br />Colorado. These include wickiups, Intermountain Brownware ceramics, trade <br />beads, and equestrian rock art (Grady 1984). Small side and corner-notched arrow <br />points cannot be attributed with absolute confidence to Numic peoples unless asso- <br />ciated with one or more of the traits listed above, as the bow and arrow was in use <br />throughout a broad surrounding region since about A.D. 500 or earlier (Buckles <br />1971; Reed 1984; Holmer 1986). Although probably much better represented than <br />is currently known, identified Numic sites are present in small numbers in the <br />project area vicinity (Grady 1984). <br />3.4 Historic Euro-American Period (Late Eighteenth Century-Present) <br />Athearn (1981) presents an overview of this period. This complex era is <br />summarized here. Prior to 1810, the sole Europeans to occupy northwestern Colo- <br />rado were fur trappers. They remained the major Euro-American influence in the <br />region until about 1860, when the area saw an influx of miners and prospectors <br />seeking gold. Many small mining communities were established at about this time. <br />By the 1870s the cattle industry gained prominence in the region, although mining <br />continued to be economically important into the twentieth century. Industries <br />supportive of mining and ranching interest, such as lumbering, became important in <br />the late nineteenth century. Homesteaders moved steadily into the region, and <br />transportation routes continued to improve. Although mining declined, sheep and <br />cattle ranching have remained major industries until the present. Since 1920, the oil <br />industry has achieved importance. Coal mining continues to provide local income. <br />More recently, the tourism industry has provided a boost to the economy of the <br />region. <br />4.0 LITERATURE REVIEW <br />An overview of the prehistoric context of northwest Colorado (Grady 1984) <br />was consulted in order to formulate expectations concerning the range. of prehistoric <br />manifestations that might potentially be encountered. This document identifies <br />important research domains to facilitate evaluation of prehistoric cultural resources. <br />Based on the information in this publication, it was expected that the following <br />prehistoric resource types might be discovered: <br />^ Isolated artifacts <br />^ Lithic scatters <br />^ Campsites <br />^ Rock shelters <br />^ Toolstone quarries <br />^ Rock art <br />^ Stone circles <br />^ Game drive sites <br />^ Masonry structures <br />^ Wickiups <br />6 <br />