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-13- <br />• Talus deposits are sandy and clayey soils with a large amount <br />of angular boulders, often several feet in diameter. Physical <br />properties of talus deposits soils were tested (sample No. 9). <br />Cliff_forming_sandstones were mapped mostly in the valley <br />--- - ----- ----- <br />of the Munger Creek. They form significant ledges and cliffs <br />of sandstones that are clearly visible in the valley sides. <br />These cliffs are frequently several tens of feet or thicker; <br />their faces are vertical or subvertical. They indicate a high <br />resistance of sandstone against weathering, making it probably <br />the strongest rock of the formation, Sandstone ledges of a <br />limited thickness were mapped at numerous locations in the <br />valley of the Munger Creek tributary. They can be frequently <br />followed for long distances. They occur mostly on the slope <br />between the haul road and the valley bottom; some limited ledges <br />could be found in a steep slope above the cut No. 2. <br />Interbedded shales,_sandstones-and_siltstones were mapped <br />at several locations along the upper part of the road. The <br />most significant outcrop of this unit was found in cut No. 2. <br />Rocks encountered in the mine portal cut have a very similar <br />character. These rocks are typically slope-forming. They are <br />considerably softer than the previous unit of cliff-forming <br />sandstones. Layers of sandstone within this unit are of a <br />limited thickness and they are mostly densely jointed and weath- <br />ered close to the surface. Shales and coal,that belong in this <br />• unit are usually soft; they weather easily, and in artificial <br />