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• Stations 0 +00 through 0 +20 were unmappable due to overburden and rock <br />cover. The condition of the highwall is unknown in this section. <br />• Stations 0 +20 through 1 +00 consisted of highly fractured granitic gneiss. The <br />foliation strike varies in this area due to minor folding and ranges from 195 to <br />360 degrees. Foliation dips ranged between 6 and 55 degrees west to southeast. <br />Foliation spacing ranges approximately 4 inches to more than 2 feet, and <br />foliation apertures were tight and slightly rough to very rough. The primary <br />joint set strike ranges from 158 to 190 degrees and generally dips from 64 to 77 <br />degrees northeast to southwest. A second primary joint set is evident in this <br />area and exhibits a strike of 260 to 270 degrees with dips of 65 to 78 degrees <br />south to southeast. The spacing of the primary joint sets varied widely, but <br />averaged approximately 18 inches. Joint apertures were tight to moderately <br />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 <br />the rock. These blocks are anticipated to be limited in size, and should be retained on the <br />bench below the highwall. Due to the moderately to highly fractured nature of the rock, <br />raveling is to be expected in this area. Raveling from this zone should be retained on the <br />bench below the highwall and is anticipated to cause only local operational delays. <br />• Stations 1 +00 through 6 +00 consisted of moderately fractured granitic gneiss. <br />The foliation strike in this area varies due to minor folding and ranges from 185 <br />to 355 degrees with dips ranging from 5 to 40 degrees southwest to southeast. <br />Foliation spacing ranges approximately 4 inches to more than 2 feet, and <br />foliation apertures were tight and slightly rough to very rough. The primary <br />joint set strike ranges from 100 to 129 degrees and generally dips from 55 to 87 <br />degrees northwest. A second primary joint set strike ranges from 5 to 340 <br />degrees and generally dips 72 to 86 degrees northwest to southwest. The <br />spacing of the primary joint sets varied widely, but averaged approximately 18 <br />inches. Joint apertures were tight to moderately open with slightly rough to <br />rough faces. <br />Small blocks may form in this area due to the orientation of the highwall and jointsets of <br />the rock. These blocks are anticipated to be limited in size, and should be retained on the <br />bench below the highwall. Due to the moderately to highly fractured nature of the rock, <br />raveling is to be expected in this area. Raveling from this zone should be retained on the <br />bench below the highwall and is anticipated to cause only local operational delays. <br />• Stations 6 +00 through 6 +30 consisted of highly fractured granitic gneiss. The <br />location appears to be a splay of the fault mapped in the area (Scott, 1972). The <br />highwall in this area is too highly fractured to obtain any RMR data <br />• Stations 6 +30 through 8 +60 consisted of moderately fractured granitic gneiss. <br />The foliation strike in this area varies due to minor folding and ranges from 340 <br />to 345 degrees with a dip ranging from 30 to 35 degrees southwest. Foliation <br />spacing ranges approximately 4 inches to more than 2 feet, and foliation <br />apertures were tight and slightly rough to very rough. The primary joint set <br />- 8 - <br />Morrison Quarry Annual Report 2011 <br />P \23514 \133- 23514 - 12002 \ Deliverables \Delry -01- Annual Report \Annual_Report_2011_Geotech.doc <br />January 2012 <br />