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debris is present. It is saturated with spring runoff water vrhich provides <br />. seepage flow all swnmer and fall. Landslide debris (LS on the Geology F?ap) <br />is present on the east side of Grassy Creek. This debris is composed of <br />shaley material deposited by translational slides. The ;naterial appears <br />to be in a stable condition. <br />:4 rnri-iirc <br />The Grassy Creek D?ine area is situaied on the west limb of the north <br />plunging Fish Creek Anticline. Beds dip westerly from 2 to 4° on the east <br />to 14 to 16° on the west. Beds have a plunge co;nponent to the north which <br />increases steadily northward from almost zero to near vertical in the area <br />of an old strip ;nine north of the Grassy Creek "line (see geologic cross-sections). <br />Gradients of Grassy Creek coincide with the north plunge throughout the <br />permit area. <br />Two cross sections through the mine area have been prepared and are shown <br />on the following two fold-out pages. The locations of these cross-sections <br />are shown on the Geology ~?a p. Electric logs of drill holes 75-2, J6-3, 76-4, <br />79-1, 79-4A, 79-4B, and 79-5 are included as appendices in Volume 2 of this <br />permit. Lithologic logs of drill holes Brueggen kl-1B, Long irl-40, and Frink <br />ii41-59 are included i~mrnediately after the electric logs in Volume 2. <br />A geologic cross-section through Pit 4 is attached. There are five <br />coal seams and all are defined to be Riders of the Pinnacle coal seam. The <br />top rider is not mined since it is too oxidized. Rider 5 does not show up <br />throughout Pit 4 and is not always mined. Coal seams to be extracted include <br />the Pinnacle~2,3,4u5 riders. A lithologic log of hole 2-19-B1-2 at Pit <br />4 is attached. <br />Coal Quality: <br />The Grassy Creek htine has produced coal from the Pinnacle and Pinnacle <br />riders. Future production will be from the blacksmith seam as well as Pin- <br />nacle. both coals are classified as bituminous with the follo~ving analysis: <br />BTU SULFUR t•?OISTL'RE ASH <br />Pinnacle 11,000 to 11,300 0.5 to 0.5 10.0 to 12.0 5.0 to 7.0 <br />Blaci<s~nith 11,465 0.4 to 0.7 10.5 4.0 to 7.0 <br /> <br />2-35 II.D-5 <br />