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Hearths. During the mitigation operations at SRP139, 21 featuzES of • <br />r~vious cultural origins were exposed and have been interpre:ted.as <br />hearths. Five of these hearths were located within excavation units <br />while the remaining 16 were uncovered during the monitoring of topsoil <br />removal. These hearths are basically similar: a cir~ilaz or slightly <br />elliptical configuration of large sands~ne slabs or nibbler, score of <br />which retain such. evidence of firing as oxidation (reddening), charring, <br />or fire-cracking. h9any of the hearths aze sa~akat less than distinctive, <br />a nondescript concentration of sandstcoe cobbles, a few of which may be <br />fire-reddened or -cracked. Others, however, are lined with stone slabs <br />and floored with rock, many of the slabs fire-reddened on their hearth <br />interior. Table 7 suamarizes the location, morphological characteris- <br />tics, and age (if deteanired) of each of the 21 firehearths. All of the <br />hearths are illustrated by either a plan view sketch, profile, or photo. <br />The location of that illustration (figure number) is indicated in the <br />last column. <br />Artifacts. The artifacts recovered from both test excavations and • <br />monitoring operations at SKC139 consist solely of chipped stone, this <br />sample being both sparse and notably nondiagnostic. These results, <br />however, are not inconsistent with findings fran the original survey ar_d <br />testing activities. The survey collected a total of 22 different arti- <br />facts--including the resharpened Scottsbluff projectile point, two <br />scrapers, two utilized flakes, and three heat-treated flakes--and observed, <br />but did not collect, a "number" of additional flakes. Fh:en the interpreted <br />area of the site is taken into consideration (247,500 square meters), the <br />density of surfaco artifacts is quite low and dia~ostic materials are <br />limited to a single specimen. <br />Testing of the site increased the sample size of artifacts and diagnostic <br />materials from SFQ'139. ~aenty-seven tools were collected and include <br />utilized flakes (10), bifaces or bifaoe fragments (6), ururodified flakes <br />(4), retouched flakes (3), projectile points or point fragments (3), and <br />a grinding stnne/hammerstone. Diagnostic materials include a point frag- • <br />meet of the Scottsbluff II variety, the basal portion of a probable <br />40 <br />