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Table 1 <br />Cripple Creek & Victor Gold Mining Company <br />Mill Site Earthworks <br />Summary of Earthworks Material Specifications <br />• <br />Abbreviations: <br />NP- Non - Plastic <br />N /A- Not Applicable Page 1 of 1 <br />GRAIN SIZE DISTRIBUTION <br />PLASTIC <br />PERMEABILITY <br />MATERIAL <br />INDEX <br />(cm /sec) <br />SIEVE <br />PERCENT <br />SIZE <br />PASSING <br />Underdrain Fill Material <br />12" <br />100 <br />15 max <br />N/A <br />(UFM) <br />No. 200 <br />0 -6 <br />Coarse Shaft Backfill <br />12" <br />100 <br />(CSB) <br />20 max <br />N/A <br />No. 200 <br />0 -15 <br />Select Structural Fill <br />(SSF) <br />NP <br />N/A <br />3" <br />100 <br />2" <br />100 <br />Pipe Bedding Material <br />(PBM) <br />15 max <br />N/A <br />No. 4 <br />30 -100 <br />No. 200 <br />5 -20 <br />Overburden /Structural Fill <br />24" <br />100 <br />(OVF /SF) <br />30 max <br />N/A <br />No. 200 <br />0 -25 <br />Soil Liner Fill (SLF) <br />10 min <br />1.0E -06 (max) <br />2" <br />100 <br />No. 200 <br />15 -65 <br />1.5" <br />100 <br />Drain Cover Fill <br />NP <br />N/A <br />0.75" <br />70 -100 <br />(DCF) <br />No. 4 <br />5 -50 <br />No. 200 <br />0 -8 <br />Abbreviations: <br />NP- Non - Plastic <br />N /A- Not Applicable Page 1 of 1 <br />