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NUCLA COAL MINE <br /> MONTROSE COUNTY, COLORADO <br /> F <br /> a <br /> L <br /> ,M <br /> } <br /> Figure 15 . Site 5MN1257 , Biface with Utilization o <br /> Mottled Red-White-Gray Chert , 3 . 3 Inches <br /> by 2 . 5 Inches (Artifact #43 , p. 28 ) . <br /> .n <br /> t' <br /> wi T <br /> --A <br /> Figure 16 . Site 5MN1257 , Core of Green Quartzite , <br /> 3 . 5 Inches by 3 . 7 Inches (Artifact #53 , <br /> page 29 ) . <br /> 40 <br />