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Homestake Mining Company June 17.2019 Reoutar 1t2d,Operation Reclamation Permit APP11-1 n Package Productivity-Motor Graders Motor Grader Specifications sanpton 0 14 1 / 24 Grader Widen ft 8 9.25 10,08 14.04 Blade Width 8 12 14 16 16 Ri er W Idth 7 shanks It 7.6 8.5 9.75 12.83 Road Maintence Speed(mph) Minimum 3 3 3 3 Maximum 9.5 9.5 9.5 9.5 A-. 6,25 6.25 6.25 6.25 Hourl Production 33,000 33.000 33,000 33.000 Ri in S eed m 1 1 1 1 Minimum 0 0 0 0- maxi- 3 3 3 3 Average 1.5 1.5 1.5 1.5 Altitude Dwabon Factor 0.96 0.98 0.98 0,98 Hourly Produdion(with job efficiency orrectien 8 altitude derabon factors) excludn m ver bme 8311 6.442 6,442 6442 Maneuver time uer 0.5 0.5 0.5 0.5 O arator Efficient 1 1 1 1 Job ERICIMc 0.83 0S3 0.83 0.83 Productivity-Excavators Track Excavator Specifications Track Excavators Hvy Duty Rock Extreme Service Exc Hvy Duty Trench De scnpt1on 72 320C 325C 33 J 36 ..haulroad rxontour Bucket C x 0.68 1,57 2,22 2.22 3 4.6 7.3 312C 30",0.68 wbic d 41'0.94 cubic d 22'..42 cubic d Fib Factor 0.9 0.9 09 0.9 0.9 0.9 0.9 320C 30",0.90 wbic tl 55.1"1.57 cubic yd 23.T..58 cubic Vd Average Bucket Load c 0.612 1.413 1.998 1.998 2.7 4.14 6.57 325C 36",1.25 cubicd 60' b 2.22 cuc yd 30",.88 cubic yd Sod T xketl earth hard clay hard clav hard da hard d hard cla hard cl 330C 36".1.25 cubicVol 60 2.22 wbic d 30'..89 cubicd !ob Cmdition mad4lard med-hard med-hzrd med-hard med-h.d med-hard med-hrd 345E 43.2".1.69 cubic d 65"',3.0 cubic d 48 2.09 cubic d Cycle Times minutes-based on hard cl 365BL 60",3.25 cubic d 82'•4.6 cubicd 59••,3.27 cubicd Load Bucket 0.07 US 0.09 0.09 0,13 0,1 0.19 385BL iil".6.30 cubic d. 96.0,7.30 cubicd 57",2.75 cubicd Swin Loaded 0.06 0.06 0.06 0.07 0.07 0.09 0.06 Dump Bucket 0.03 0.03 0.04 0.04 0.02 0.04 0.03 Sw,q Empty 0.05 0.05 0.06 0.07 0.06 0.07 0.07 Total Cycle Time 0.21 0.23 0.25 0.27 0.28 0.3 0.35 Job"'Cienc 0.5 0.5 0.5 0.5 0.505 0.5 a cyranbes ve tt Ma9eo sAE,�a�aa,m O erator Efficient 1 1 1 1 1 1 1 OTES Buckerstwbwh Track E.caaiwsra WheNLo ,a aeoaee CECo4 Altitude D-bon Factor 0.78 0.83 1 1 0.93 0.86 0.85 Corrected Productivi LCY/hr 68 153 240 222 269 356 479 naeaek rw eK�enkl�.�ea Howse.B�ckw uzeaam capxmes owamee rcan CATERPILIOR Ex loration Road C cle Time WA 0.38 0.4 WA 0.42 N/A WA PERFO9uANCE HAHoeoox ED 34 secmn tz wnea--aye saran 4.E:ca- ExlorationRoatlCorrProtlLCY/hr WA 93 150 WA 179 N/A N/A eucka caPxry ar•4 ram a<meewmme�wl vegm a�a�onbgwaan�e..sn Track Width ft 8.17 9.17 9.83 10.5 11.42 11.5 11.5 r ..bgw Dank z xkge.r« c. aPgicauo�z veie uue�o cewrmme above wiwz r a owls rsec o siespxibes may seer apecnc Ditch/Trmeh Excavation kel 1 rc� a.x Eew ry 2t 20051 Bucket Ca aci 0.42 0.58 0.88 0.89 2.09 3.27 275 Fill Factor 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Corrected Producbvi LCY/hr 23 31 53 49 104 141 1 100 Ill Eaplwaxm qck time asvxrca ieamerrtiyamoomeg perlwned W eticavato� Source CNerpiWr Perloimance HaMEoak E4eion 35 Page 19 of 22 HOMESTAKE MINING COMPANY 148 of 164