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apertures were moderately open and slightly rough to rough. The primary joint set <br />strike ranges from 200 to 217 degrees and generally dips from 83 to 85 degrees <br />southeast. A second primary joint set is evident in this area and exhibits a strike of <br />290 to 315 degrees with dips of 80 to 90 degrees southwest. The spacing of the <br />primary joint sets varied widely, but averaged approximately 18 inches. Joint <br />apertures were tight to moderately open with slightly rough to rough faces. <br />• Stations 0 +70 through 1 +00 consisted of moderately fractured biotitic gneiss. The <br />foliation strike varies in this area due to minor folding and ranges from 212 to 225 <br />degrees. Foliation dips averaged 32 degrees southeast. Foliation spacing ranges from <br />approximately 4 inches to more than 2 feet, and foliation apertures were tight to <br />moderately open and slightly rough to rough. The primary joint set strike ranges <br />from 35 to 200 degrees and generally dips from 45 to 79 degrees northwest to <br />southeast. A second primary joint set is evident in this area and exhibits a strike of <br />318 to 320 degrees with dips of 76 to 82 degrees southwest. The spacing of the <br />primary joint sets varied widely, but averaged approximately 18 inches. Joint <br />apertures were tight to moderately open with slightly rough to rough faces. <br />Small blocks may form in this area due to the orientation of the highwall and jointsets of the <br />rock. These blocks are anticipated to be limited in size, and should be retained on the bench <br />below the highwall. Due to the moderately to highly fractured nature of the rock, raveling is to <br />be expected in this area. Raveling from this zone should be retained on the bench below the <br />highwall and is anticipated to cause only local operational delays. <br />• Stations 1 +00 through 2 +40 consisted of moderately fractured biotitic gneiss. The <br />foliation strike in this area varies due to minor folding and ranges from 210 to 230 <br />degrees with an average dip of 30 degrees southeast. Foliation spacing ranges from <br />approximately 4 inches to more than 2 feet, and foliation apertures were tight to <br />moderately open and slightly rough to rough. The primary joint set strike ranges <br />from 30 to 60 degrees and generally dips from 72 to 85 degrees northwest. A second <br />primary joint set is evident in this area and exhibits a strike of 295 to 310 degrees <br />O with dips ranging from 82 to 89 degrees southwest. The spacing of the primary joint <br />sets varied widely, but averaged approximately 18 inches. Joint apertures were tight <br />to moderately open with slightly rough to rough faces. <br />Small blocks may form in this area due to the orientation of the highwall and jointsets of the <br />rock. These blocks are anticipated to be limited in size, and should be retained on the bench <br />below the highwall. Due to the moderately to highly fractured nature of the rock, raveling is to <br />be expected in this area. Raveling from this zone should be retained on the bench below the <br />highwall and is anticipated to cause only local operational delays. <br />• Stations 2 +40 through 3 +45 consisted of highly to moderately fractured biotitic <br />gneiss with a nearly vertical granitic pegmatite located between approximate stations <br />2 +40 and 2 +45. The pegmatite has a lateral offshoot to the north at an approximate <br />height of 20 feet. The foliation strike in this area varies due to minor folding and <br />ranges from 130 to 175 degrees with an average dip of 44 degrees northeast. <br />5 <br />Morrison Quarry Annual Report 2012 <br />P \23514\ 133 - 235 14- 13002\Dehverables\Dehv -01 -2012 Annual Report \ Annual_ Report_2012_Geotech doc <br />January 2013 <br />