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3 <br />• Archaeology and Historic Preservation (OAHP) in Denver on July I8, 1996. Second, reports of <br />other neazby medium- and large-scale cultural resource investigations were examined. <br />Files Search <br />The state files seazch covers 110 square kilometers and includes the entire Lorencito <br />property on which the various mine facilities will be constructed. The seazch was conducted by <br />UTMs since this area has not been covered by cadastral survey. State records list ten sites and <br />six isolated Fmds, recorded during two different projects. The projects include a highway <br />department investigation along Colorado State Highway 12 (OAHP accession no. LA.CH.H12.2; <br />Gleichman 1983.) and a pipeline project conducted by MAC (OAHP accession no. LA.E.RI; Rood <br />and Church 1989). Several previously recorded sites and isolated finds fall outside the project <br />area in the Picketwire Valley to the north. The project area contains no previously recorded sites. <br />The pipeline survey (Rood and Church 1989) does enter onto the northwestern edge of the <br />Lorencito property beginning about one mile west of Medina Plaza, and continuing to the <br />pipeline's western terminus in the lower reaches of the South Fork Purgatoire River valley. This <br />previous inventory does not cover any of the specific development azeas for the mine. <br />Reeional Literature <br />In addition to the two projects cited above (Gleichman 1983; Rood and Church 1989), <br />several other archaeological investigations have been conducted in the area. There are also <br />• several azchaeological and historical syntheses that apply to the region. The following brief list <br />is by no means exhaustive, but gives a basis from which to view the prehistory and history of <br />the Lorencito Canyon Mine project azea. Ireland and Wood (1973) report on 18 years of <br />excavations at TC:C9:20, a prehistoric structural site (masonry and jacal) dating to A.D. 1000- <br />1300 and assigned to the Upper Purgatoire Complex. TC:C9:20 is located in the Picketwire <br />Valley about five miles west of Trinidad and below the maximum pool elevation of Trinidad <br />Reservoir. Ireland (1974) describes a number of inventory, excavation and synthetic investiga- <br />tions for Trinidad Reservoir. Tucker (1983) covers a cultural resource inventory for a proposed <br />coal mine on the north side of the Picketwire Valley neaz Valdez and Segundo, about four miles <br />down the Purgatoire River from the Lorencito Mine project azea. Blair (1980) reports on a <br />cultural resource inventory conducted prior to widening and realignment of Colorado State <br />Highway 12 west of the Lorencito Mine project area. As a follow-up to Blair (1980), Indeck and <br />Legazd (1984) report on test excavations at four sites along Colorado State Highway 12 between <br />Valdez and Tijeras, east of the Lorencito Canyon Mine project azea by several miles. Lutz and <br />Hunt (1979) present the results of a lazge scale sample survey designed to identify settlement and <br />subsistence patterns in the prehistoric azchaeological record of the Pazk Plateau, the geographic <br />region within which the Lorencito Mine project area occurs. Wood and Bair (1980) describe <br />excavations at SLA1416B and SLA1211, two sites within the Trinidad Reservoir project azea. <br />These sites included Initial, Early and Late Sopris Phase materials (A.D. 1000-1225). <br />On a more general and synthetic note, three RP3 context documents cover the history and <br />prehistory of the azea (Buckles and Buckles 1984; Eighmy 1984; Mehls and Carter 1984; Buckles <br />• and Buckles 1984). Murray (1978) documents the history of the Raton Basin region. Over the <br />