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-16- <br /> <br />in a series of horizontally stratified, dark grey shales inter- <br />bedded with few sandstone ledges. All rocks appear to be weath- <br />ered; shales are soft and they disintegrate into small fragments <br />which slough down the cut face. The natural grade above the <br />cut crest is very steep (45 degrees or more). The soil cover <br />above the cut crest is of a limited thickness of no more than <br />2 feet. Because of the steepness of the slope, frequent sloughs <br />of the soil from the cut crest or above it can be observed. <br />Except for sloughing of soils from the cut crest and <br />• <br />sloughing of softer shales, there are no signs of any instabil- <br />ity. roost joints in the cut face are vertical or subvertical; <br />no joints that would dip into the cut causing potential stability <br />problems have been observed. <br />The cuts Nos. 3 and 4 are two smaller cuts; cut No. 3 is <br />--------------------- <br />about 30 to 35 feet high, cut No. 4 reaches a height of about <br />40 feet. The average slope of cut No. 3 is about 52 degrees <br />with a part up to 75 degrees steep at the upper portion close <br />to its crest. Cut No. 4 is flatter - some 57 degrees. Both <br />cuts have been excavated in colluvial soils and they do not <br />carry any traces of larger instability. <br />In the lower part of the cut No. 4, bedrock outcrops have <br />been identified. This indicates that the thickness of colluvial <br />soils may be limited; any further excavation would probably <br />reach bedrock of a similar character to that in cut No. 2. As <br />• <br />