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Archaeologi_._l investigations were betweenA.D. 1330 and 1390and repairat A.D. initiated at Sample Unit 19-25 to retrieve 1410 for feature 2. The dates associatedwith information concerning settlement and feature 2 place its constructionsignificantly subsistencedata on the aboriginalhunterand earlierthansimilarstructuresfoundelsewhere gatherers in the area. Studies included onPahuteMesa. Sourcingof obsidianfromthe collectionand mappingof 143,400 m2 (35.4 sampleunitindicatessomeof it originatesfrom acres) at site 26NY1408 and excavationand ObsidianButteand SplitRidge(within2.5 mi of mapping of 83 m2 (0.02 acres) at site the sample unit) and from the Mt. Hicks and 26NY7847. Field work was conducted Garfield Hills area of Nevada (160 km intermittentlybetweenJuly 1991 and October northwest of Pahute Mesa). Activity areas 1992. appear to reflecttemporary useof the area for Sample Unit 19-25 covers two small procurement of available lithic and faunal eastward-sloping bedrock benches and two resourcesandthe manufactureof tools. north-south trendingdrainages in a sparseto moderately dense pinyon-juniperwoodland. This work was conducted by the Culturalresourcesincludetworock and brush Quaternary Sciences Center at the Desert structuresand associatedcachesand a large Research Institute for the Department of lithic toolstonesource area and lithicartifact Energy, Nevada OperationsOffice (DOE/NV) scatter.Temporally diagnosticartifactsindicate in accordancewiththe LongRange StudyPlan periodicusethroughout the last 12,00Gyears; (LRSP). The LRSP is a program for negating however dates associated with projectile potential adverse effects to the cultural pointsindicatemostusewas in the Middleand resourceson PahuteandRainierMesasonthe Late Archaic.Radiocarbondates fromthe rock Nevada Test Site. With the completionof the and brushstructuresat site26NY7847 indicate studyas documentedin this report, DOE/NV a constructiondate of A.D. 1640 and repair has met its obligationfor culturalresourcesin between A.D. 1800 and 1950 for feature 1 and Sample Unit 19-25.