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Drill Hole Lithology Summary <br /> • Drill Hole Easting Northing Collar Total Depth Township Range Section File <br /> DH-76-9 1,331,680.00 348,870.00 7,58600 1,300.00 3C <br /> Adjusted Depths <br /> From To Seam Thickness Lithologic Qualifiers Lithology Type Shade Color <br /> 0.00 17.90 17.90 undifferentiated stone <br /> 17.90 19.80 Y45 190 coal <br /> 19.80 48.50 28.70 undifferentiated stone <br /> 4850 49.50 Y35 1 00 coal <br /> 4950 49.50 OXID 000 undifferentiated stone <br /> 4950 101.30 51.80 undifferentiated stone <br /> 101.30 10300 Y25 1.70 coal <br /> 103.00 175.00 72.00 undifferentiated stone <br /> 175.00 184.50 X3 950 coal <br /> 18450 186.50 X4 200 coal <br /> 186.50 191.50 5.00 undifferentiated stone <br /> 191.50 192.60 X5 1.10 coal <br /> 192.60 207.00 14.40 undifferentiated stone <br /> 20700 220.00 1300 sandstone <br /> 22000 234.20 1420 undifferentiated stone <br /> 23420 235.80 Al 1 60 coal <br /> 235.80 247.00 11.20 undifferentiated stone <br /> 24700 247.50 A2 050 coal <br /> 247.50 264.30 16.80 undifferentiated stone <br /> 26430 265.90 61 1.60 coal <br /> 265.90 26900 3.10 undifferentiated stone <br /> 269.00 270.00 1.00 boney coal <br /> 27000 271.50 1.50 undifferentiated stone <br /> 271 50 275.00 B2 350 coal <br /> 275.00 27540 040 undifferentiated stone <br /> 275.40 276.70 B3 1.30 coal <br /> 27670 30560 28.90 undifferentiated stone <br /> 305.60 30900 C3 3.40 coal <br /> 309.00 313.20 C5 4.20 coal <br /> 313.20 32200 8.80 undifferentiated stone <br /> 322.00 323.70 C7 1.70 coal <br /> 32370 35820 34.50 undifferentiated stone <br /> 35820 361.30 D1 3 10 coal <br /> 361.30 369.90 D2 8.60 coal <br /> 369.90 397.00 2710 undifferentiated stone <br /> 397.00 403.00 6.00 sandstone <br /> 40300 404.60 1.60 undifferentiated stone <br /> 40460 410.40 E2 5.80 coal <br /> Rio Tinto Energy America-Colowyo Mine Page 1064 of 1194 <br />