Free Motion for Summary Judgment - District Court of Federal Claims - federal

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 1 of 12

PE-18-250

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 2 of 12

PE-18-251

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 3 of 12

PE-18-252

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 4 of 12

PE-18-253

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 5 of 12

PE-18-254

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 6 of 12

PE-18-255

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 7 of 12

PE-18-256

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 8 of 12

PE-18-257

Case 1:95-cv-00650-LSM

Document 118-19

Filed 02/06/2008

Page 9 of 12

PE-18-258

USFS 2004

Liberty 2004

USFS and Liberty 2004

1998 USFS Sample Data

1998 Liberty Sample Data

Cyanide Leach Test Fire Assay opt opt none 0.1731 0.1389 0.1345 0.139 0.0573 0.084 0.0407 0.1736 0.0131 0.1103 0.0606 0.0737 0.055 0.0102 0.0313 0.0321
KV-7 -1/4" Head 0.098 0.057 0.131 0.092 0.086 0.086 0.054 0.265 0.433 34.59 0.150 0.172 64.90 0.112 6.00 0.051 13.45 0.007 0.032 59.30 0.019 6.00 0.076 16.76 0.013 0.040 46.50 0.019 3.00 0.151 19.06 0.029 0.045 52.30 0.024 9.00 0.155 10.37 0.016 0.059 64.10 0.038 9.20 0.292 15.12 0.044 0.039 29.80 0.012 15.00 0.083 9.11 0.008 0.042 73.70 0.031 11.00 0.083 11.22 0.009 0.030 30.60 0.009 10.00

Flotation Test Calc. Head % 42.25 58.83 44.57 61.33 55.40 54.65 34.45 9.72 71.34 77.19 51.06 47.18 76.92 23.02 90.18 7.27 42.16 97.35
KV-7a -1/4" Head KV-9 -1/4" Head KV-9a -1/4" Head KV-10 Top -1/4" Head KV-10 Bottom -1/4" Head KV-15a -1/4" Head KV-15b -1/4" Head

Cyanide Leach Test Cut Calc. Recovery opt 0.043 0.102 0.062 0.082 0.077 0.031 0.029 0.004 0.124 0.010 0.056 0.029 0.057 0.013 0.009 0.002 0.014 0.147 0.048 0.179 0.128 0.050 0.020 0.010 0.055 0.058 0.045 0.058 0.1015
w'ted aves

Fire Assay Cut Recovery % 49.28 57.92 47.89 60.77 61.65 67.33 57.53 57.97 KV-11 -1/4" Head 0.0932 0.0533 0.0389 64.66 0.025 0.099 0.138 15.18 0.025 0.043 41.38 0.021 12.25 0.069 0.094 1.45 0.001 0.094 5.31 0.005 6.77 37.84 0.020 KV-5 -1/4" Head 0.069 0.087 19.16 0.017 0.037 53.60 0.020 10.00 0.069 0.094 0.80 0.001 0.094 9.59 0.009 10.39 51.33 0.048 KV-1 -1/4" Head 0.206 0.235 19.65 0.046 0.087 42.20 0.037 6.80 0.206 0.235 7.44 0.017 0.235 17.16 0.040 24.60 0.058 0.010 0.006 0.041 0.055 5.30 0.003 0.007 17.10 0.001 9.50 0.206 0.542 1.67 0.009 0.542 30.60 0.166 32.27 0.175 0.058 0.542 0.235 0.094 0.094 61.57 4.86 10.35 53.38 0.334 0.011 0.010 0.050 0.056 KV-12 -1/4" Head 0.054 0.045 20.33 0.009 0.016 29.60 0.005 2.00 0.058 KV-15a -1/4" Head 0.160 0.242 24.02 0.078 0.102 62.10 0.065 12.00 0.099 KV-10 Top -1/4" Head 0.086 0.132 18.49 0.025 0.044 50.85 0.022 12.00 0.081 KV-9 -1/4" Head 0.116 0.240 13.31 0.033 0.047 42.84 0.022 24.20 0.131 0.065 0.89 0.001 0.065 12.29 0.008 13.18 0.009 0.065 0.058 KV-7 -1/4" Head 0.077 0.083 10.11 0.008 0.036 53.18 0.021 21.00 23.23 0.015 0.088 KV-8 -1/4" Head 0.100 0.156 13.31 0.021 0.023 23.00 0.005 13.00 0.051 KV-6 -1/4" Head 0.084 0.102 8.14 0.008 0.033 39.30 0.013 12.00 opt Rec'd Au Sample No. opt opt Rec % Rec opt opt Rec % Rec opt ft. Au opt opt Rec % Rec opt opt Rec % Rec opt Rec % Rec opt opt Rec % Rec opt Cut Apex Calc Hd Calc Hd length Calc Hd Calc Hd Calc Hd Rec'd Au opt 0.051 0.088 0.057 0.081 0.100 0.062 0.058 0.002 0.068 0.016 0.048 0.021 0.029 0.019 0.011 0.023 0.008 0.073 0.033 0.090 0.064 0.025 0.010 0.005 0.043 0.063 0.046 0.036 56.93 0.058 0.0277 46.32 0.013 0.0649 49.23 0.032 0.0932 48.38 0.045 0.0469 67.10 0.031 0.0760 48.68 0.037 Composites Above 0.0998 0.0965 0.0862 0.1600 0.1328 0.1210 0.1516 0.1036 opt Ave US-LM rec Au Head

Gravity Concentration

Cyanide Tests

Fire Assay

Gravity Concentration

Flotation Tests

Gr-Fl Combined

Cyanide Tests

Gr-Fl-Cyan Combined ID and Notes Rec% Rec opt

Fire Assay

Calc.

Calc.

Sample 0.1022

opt

Head,

Recovery,

Rec'd Au

Head,

Recovery,

Rec'd Au

Apex Samples

width

Apex

none

opt

%

opt

opt

%

opt

ft.

K1-P1&2

0.105

56.3

0.059

0.085

13.1

0.011

Kl 1A, 1B, 1C

25

K2-P

0.130

57.0

0.074

0.141

39.7

0.056

Kl 2A, 2B

25

K3-P

0.103

51.2

0.053

0.093

12.7

0.012

Kl 3A, 3B, 3C

22

K4-P

0.131

60.2

0.079

0.107

7.2

0.008

Kl 4A, 4B, 4C

26

33.35

0.022

KV-9 [-10 Mesh]

K5-P

0.181

67.9

0.123

0.128

16.7

0.021

Kl 5A, 5B, 5C

20

K6-P

0.115

80.0

0.092

0.064

23.5

0.015

Kl 6A, 6B, 6C

13

K7-P

0.109

80.6

0.088

0.108

39.0

0.042

Kl 7A, 7B,7C

17

K8-P

0.018

0.0

0.000

0.021

56.3

0.012

Kl 8A, 8B, 8C, 8D

28

K9-P

0.021

0.0

0.000

0.026

44.6

0.012

Kl 9A,9B,9C,9D,9E,9F

24

K10-P

0.036

61.0

0.022

0.032

21.3

0.007

Kl 10A, 10B

24

73.97 28.43 19.96 56.54

0.401 0.067 0.019 0.053

KV-1 #2 [-10 Mesh]

K11-P

0.076

51.6

0.039

0.076

8.7

0.007

Kl 11A, 11B, 11C

14

KV-1 #4 [Grind 20 Min.]

K12-P

0.046

28.5

0.013

0.042

10.7

0.004

Kl 12A, 12B, 12C

14

KV-5 #3 [-10 mesh]

K13-P

0.001

0.0

0.000

0.004

52.4

0.002

Kl 13A, 13B, 13C

29

KV-5 #1 [Grind 20 min.]

K14-P

0.078

33.5

0.026

0.077

16.6

0.013

Kl 14A, 14B, 14C

25

K15-P

0.024

54.4

0.013

0.005

62.7

0.003

Kl 15A, 15B, 15C

21

K16-P 0.151 0.0637 0.1853 0.1297 0.0543 0.0235 0.0236 0.0859 59.82 40.74 87.22 92.64 98.46 96.76 74.90

0.067

65.5

0.044

0.059

22.0

0.013

Kl 16A, 16B, 16C

24

K17&18-P

0.018

19.0

0.003

0.015

18.9

0.003

Kl17A,17B,17C,17D,17E,17F

23

K19-P

0.001

0.0

0.000

0.000

100.0

0.000

Kl 18A, 18B, 18C

18

K20-P

0.030

59.3

0.018

0.031

4.3

0.001

Kl 19A, 19B, 19C

17

K21-P

0.001

0.0

0.000

0.001

5.5

0.000

Kl 20A, 20B, 20C

16

K22-P

0.000

0.0

0.000

Lost

0.0

0.000

Kl 21A, 21B, 21C

24

K23-P

0.001

0.0

0.000

0.000

0.0

0.000

Kl 22A, 22B, 22C

16

K24-P

0.000

0.0

0.000

0.000

0.0

0.000

Kl 23A, 23B, 23C

13

K25-P

0.001

0.0

0.000

0.000

100.0

0.000

Kl 32A, 32B, 33C

16

0.054

34.4

0.031

0.048

28.2

0.010

Averages

20.58

0.058

Klamath Gr.

0.022

Dariel Gr.

0.015

Ridge Gr.

All Cyanide Leach Test Calc. Fire Assay opt none 0.1881 0.069 0.307 0.0322 0.1229 0.0805 0.0851 0.1268 0.1666 Fire Assay Other Sample No. KV-13 -1/4" Head KV-14 -1/4" Head 0.039 KV-2 -1/4" Head KV-3 -1/4" Head KV-4 -1/4" Head 0.063 Six O'C-1 -1/4" Head Six O'C-2 -1/4" Head Six O'C-3 -1/4" Head Six O'C-4 -1/4" Head Six O'C-5 -1/4" Head 0.000 YD-1a -1/8" Head YD-1a-2 -1/8" Head YD-1b-1 -1/8" Head YD-1.b-2 -1/8" Head YD-1c-1 -1/8" Head YD-1d-1 -1/8" Head YD-1d-2 -1/8" Head 0.197 BS-1 -1/8" 7-27-98 BS-2 -1/8" 7-27-98 BS-3 -1/8" 7-27-98 BS-4 -1/8" 7-27-98 BS-5 -1/8" 7-27-98 BS-6 -1/8" 7-27-98 0.254 0.395 0.228 0.330 0.222 0.135 0.163 0.138 0.186 0.191 0.449 0.120 0.079 15.52 44.89 22.68 24.69 14.83 24.59 24.13 0.145 0.119 21.73 0.045 64.53 0.000 0.019 76.63 0.015 0.041 0.026 0.012 0.202 0.042 0.040 0.034 0.081 0.062 0.013 0.005 0.007 0.009 0.029 0.085 0.068 0.031 0.031 9.00 42.00 3.70 6.50 21.50 28.10 26.80 19.66 19.50 0.001 0.002 0.000 0.001 0.006 0.024 0.018 0.007 0.006 0.122 0.136 0.186 0.177 4.29 3.18 0.127 0.125 0.182 0.184 3.84 4.05 0.145 0.145 0.218 0.166 1.36 1.98 0.000 0.014 73.79 0.010 0.000 0.184 97.12 0.179 0.000 0.003 43.01 0.001 0.000 0.003 32.12 0.001 0.073 24.48 0.018 0.030 0.043 0.047 16.96 0.008 0.022 51.20 46.93 0.021 0.024 29.72 0.007 0.009 42.80 0.124 0.149 26.75 0.040 0.058 46.80 0.020 5.70 0.001 0.017 38.10 0.008 0.027 0.004 0.011 0.014 0.124 0.124 0.177 0.161 15.13 2.46 0.023 0.025 7.10 0.002 0.006 26.10 0.002 0.055 0.015 4.29 0.001 0.028 50.10 0.014 Au opt opt Rec % Rec opt opt Rec % Rec opt Calc Hd Calc Hd Au opt 0.055 Gravity Concentration Cyanide Tests 37.38 0.073 Fire Assay Gravity Concentration Calc Hd opt 0.072 Rec % 5.25 28.70 0.049 0.046 0.1357 45.54 0.062 0.142 0.219 31.264 0.057 0.022 10.014 0.004 29.52 0.025 0.030 KD-8 Head 0.053 0.204 16.72 0.034 0.003 5.70 0.000 25.44 0.020 0.027 KD-2 Head 0.441 0.303 22.70 0.069 0.099 22.40 0.022 43.03 0.053 0.043 0.1010 42.97 0.043 KD-1 Head 0.173 0.278 19.65 0.055 0.008 4.60 0.000 12.96 0.004 0.007 BS-1 -1/8" 7-27-98 0.159 0.409 18.65 0.076 0.031 19.50 0.006 77.2 0.237 0.138 0.1885 66.60 0.126 KD-5 Head 0.057 0.092 55.36 0.051 0.004 7.00 0.000 4.29 0.003 0.029 0.0805 31.90 0.026 KD-7 Head 0.055 0.132 74.74 0.099 0.003 5.50 0.000 6.42 0.012 0.055 0.1731 33.91 0.059 KD-4 Head 0.055 0.115 11.03 0.013 0.003 5.40 0.000 0.1299 30.72 0.040 0.040 0.1200 47.31 0.057 opt % opt opt opt % opt Sample No. Au opt opt Rec % Rec opt opt Rec % Rec opt Head Recovery Rec'd Au Ave US-LM rec Au Head Recovery Rec'd Au Dump Calc Hd Calc Hd Cut Calc. Cut Cut Fire Assay Gravity Concentration Cyanide Tests

Case 1:95-cv-00650-LSM

Mined Cut Apex

Cyanide Leach Test

Flotation Test

Sample

Fire Assay

Calc.

Calc.

Dump Samples

Dumps

opt

Head,

Recovery,

Rec'd Au

Head,

Recovery,

Rec'd Au

D1-P

none

0.138

9.5

0.013

0.110

63.9

0.070

Kd 24A, 24B, 24C

D2-P

0.114

3.8

0.004

0.158

61.4

0.097

Kd 25A, 25B, 25C

D3-P

0.140

9.4

0.013

0.092

59.5

0.055

Kd 26A, 26B, 26C

D4-P

0.066

6.6

0.004

0.070

56.0

0.039

Kd 27A, 27B, 27C

D5-P

0.043

30.4

0.013

0.040

26.4

0.011

Kd 28A, 28B, 28C

D6-P

0.039

11.1

0.004

0.079

42.9

0.034

Kd 29A, 29B, 29C

D7-P

0.057

0.0

0.000

0.066

49.9

0.033

Kd 30A, 30B, 30C

D8-P

0.076

5.7

0.004

0.059

57.7

0.034

Kd 31A, 31B, 31C

0.084

9.6

0.007

0.084

52.2

0.047

Averages

Looks like dump flotation and cyanide test results reversed!

Mined Cut - Dumps Flotation Tests Calc Hd Rec opt 0.004 opt 0.072 Rec % 8.62 Rec opt 0.006 Rec % 13.87 Rec opt 0.010 Gr-Fl Combined Cyanide Tests Calc Hd opt 0.072 Rec % 12.65 Rec opt 0.009 Rec% 24.76 Rec opt 0.018 Gr-Fl-Cyan Combined

KV-13 [-10 Mesh]

0.027 0.004

0.177 0.161

12.97 7.54

0.023 0.012

28.10 10.00

0.050 0.016

0.177 0.161

16.76 31.84

0.030 0.051

40.15 38.66

0.071 0.062

KV-2 #3 [-10 mesh]

Document 118-19
KV-2 #2 [Grind 20 min.]

0.003 0.003 0.007 0.007 0.007 0.006

0.218 0.166 0.182 0.184 0.186 0.177

43.42 31.67 17.92 16.39 17.62 18.36

0.095 0.053 0.042 0.040 0.044 0.038

44.79 33.65 21.76 20.44 21.91 21.54

0.098 0.056 0.049 0.048 0.051 0.044

0.218 0.166

22.39

0.049

58.55 NA = cyanide tail assay > float tail assay

0.128

YD-1a-1 [Grind 20 Min.]

YD-1a-2 [-10 Mesh] All 10 0.184 0.186 0.177 26.34 24.91 28.12 0.062 0.018 0.079 0.040 38.44 45.55 0.106 0.077 41.60 0.093 USFS -10m Gr 20 min

9 with Cyan Results

0.159 0.059 0.074 0.040 0.039 0.031 0.067 0.034 0.054 0.027 0.036 0.038

0.409 0.099 0.221 0.093 0.048 0.168 0.173 0.112 0.058 0.065 0.078

18.65 13.03 14.07 14.41 10.10 27.54 16.30 10.36 25.10 9.18 14.88

0.076 0.013 0.031 0.013 0.005 0.046 0.031 0.012 0.015 0.006 0.011

Missing Data

Revised Liberty Spreadsheets, 02/07 Sheet 09
Union-1 -1/8" 8-12-98 Union-2 -1/8" 8-12-98 Union-3 -1/8" 8-12-98 Union-A -1/8" 8-12-98

Filed 02/06/2008 Page 10 of 12

PE-18-259

USFS 1998 - Gravity split test sample Crush -10m*
"some"

Liberty 1998 - gravity/floation/cyanide (in series) fire assay sample prep assay Pulverize in ball mill for 20 min. rejects con assay rejects pan

split

fire assay sample

test sample

prep

crush vein material -1/4" crush dump material -1/8" pan con sample assay

assay

gold saver

con

tail

crush to -10m*

knelson bowl

sample

con

tail

assay

pulverize

crush -10m*

flotation Denver 1000gr cell Two dithiophosphate collectors Am. Cyanamid 404 and 206 Glycol Frother 65 Each at 0.15lb/T Nat. pH 7.6 to 8.3 condition slurry 3 or 6 minute float (longer for more carbo) cons filter dry sample assay assay 500 gr sample 500 ml water 8 lb CaOH 1 hr. grind in ball mill to -100m dilute to 33% solids add 4 lb/T NaCN add 3gr. Of 6x16 activated carbon agitate 24 hours sample Cyanide Leach dry filter tails

Case 1:95-cv-00650-LSM

*2 mm or 0.08"

sample

sample

flotation Denver 1000gr cell Two dithiophosphate collectors Am. Cyanamid 404 and 206 Glycol Frother 65 Each at 0.15lb/T Nat. pH 7.6 to 8.3 condition slurry 3 or 6 minute float (longer for more carbo) cons filter dry sample assay tails filter, dry dry sample assay Average recovery 18.36% rec/0.0

assay

assay

Recoveries 4.29% to 97.12% Recovery average 26.06% rec/0.039 opt Average 0.087opt assay head and 0.149 opt calc. head - assay too base Average 0.000 opt assay head and 0.045 opt calc. head from 6 O'clock apex - assay too base 95% of recovered gold from Gold Saver and 5% from Knelson Bowl Low amalgamation recovery from 5 samples tested interpreted as no free gold. What about 26.6% average grav recovery?

Document 118-19

USFS 1998 Cyanide Leach No further prep reported. Leached -1/4" vein and -1/8" dump material

Apex recoveries 17.1% to 73.7% Dump recoveries 3.7% to 28.1% Overall average recovery 26.53%/0.009 opt Average 0.102 opt assay head and 0.029 calc. head - preg rob Carbon-in-pulp (CIP) test shows increased CN recovery = ave. recovery doubled for 3 samples

Average recovery 17.72%/0.044 opt

Filed 02/06/2008

Revised Liberty Spreadsheets, 02/07 Sheet 11a

remove activated carbon filter and wash Gravity recovery 0.80% to 15.13% (ave. 4.05%/0.007 op dry Flotation recovery 5.31% to 30.60% (ave. 16.39%/0.040 Cyanide recovery 4.86% to 61.57% (ave. 26.34%/0.062 sample Gr./Fl./CN average assay head 0.125 opt and calc. head Gr./Fl./CN -10m recovery average 38.44%/0.0.106 opt assay Gr./Fl./CN grind. 20 min. recovery average 45.55% rec/0 Gr./Fl./CN all recovery 19.96% to 73.97% Gr./Fl./CN all recovery average 41.6% /0.093 opt

Page 11 of 12

PE-18-260

USFS 2005 - Cyanide and Flotation (in parallel) No head fire assay Crush to 100% -1/2" Cyanide Leach Split to 1000 grams Screen 10m Flotation Grind P80 65m Ball mill to -100m pan con tail sample assay assay repulp to 35% solids filtrate cake wash with 250 ml water wash filtrate cake dry measure total filtrate condition for 2 min. 100 ml alquot to assay float for 5 min hand held paddle and water wash con filter dry Cyanide Leach sample assay dry filter tails assay sample sample filter filter (1 gal pressure filter) rejects add 2 gr. NaCN agitate for 24 hrs. (mechanical agitator speed set for adequate aeration) Sulfide Float Natural pH PAX Aero31 25% solids con sample assay Flotation Denver 1000 cell copper sulfate sulfide activator potassium xanthate sulfide collector Aerofloat 25 sulfide/metal collector Aerofloat 71 frother mix for 5 min. Cone cr to -6m Pulverize to -10m add 2 gr. Of CaOH to raise pH above 10.5 -10m +10m agitate slurry in 1.5 qt. plastic pail 500 gram sample of float tail repulped to 50% solids or 500 gram sample of ground whole ore

Liberty 2004 - Gravity-Flotation-Cyanide Cyanide only and

No head fire assay

Crush -1/4"

Crush -10m*

Split

Cyanide Leach

Grind P80 65m

Leach Lime to pH 11.0 NaCN @ 2.0 lb/T 50% solids

Case 1:95-cv-00650-LSM

preg

residue

sample

sample

assay

assay

"preg robbing" cited in report Apex recovery 0.0% to 80.6 % w_7 ND (6 from ridge) Dump recovery 0% to 30.4 % Apex recovery average 34%/0.031 opt Dump recovery average 9.6% rec/0.007 opt Apex recovery 4.2% to 62.7 % with 5 from ridge ND Dump recovery 26.4% to 63.9 % Apex recovery average 32.2% rec/0.010 opt Dump recovery average 52.2% rec/0.047 opt

[are dumps results reversed or severe preg robbing in dump samples?]

Liberty 2006 Bulk Milling

Document 118-19

combine 3 apex samples and 3 dump samples into 2 10+/- ton composites run dump and apex separately

jaw crush to -1/2" (2nd run through for apex samples)

5 samples gr-fl-cn Gravity recovery 0.26% to 39.97%, ave. 10.52% Flotation recovery 0.04% to 9.54%, ave. 6.47% CN leach recovery 42.25% to 61.23%, ave. 52.48% Average calc. head 0.141 opt KV-5 calc head 0.262 opt and grav rec 39.97% KV-1 calc head 0.076 opt and grav rec 0.55%

ball mill

wash ground material through 30 m screen

-30m

+30m

Revised Liberty Spreadsheets, 02/07 Sheet 11b

carpet

screw feed back to ball mill

32 samples CN only Apex recovery average 59.82% and calc head 0.0859 opt Apex recovery 7.27% to 97.35% Apex calc head 0.0102 opt to 0.1736 op Dump recovery average 37.38% and calc head 0.1666 opt Dump recovery 4.27% to 77.20% Dump calc head 0.0322 opt to 0.3070 opt

Knelson bowl

con

tail

clean-up after both dump and apex complete

Filed 02/06/2008

Wilfley table

dry

Wilfley table

con

split

con

dry

assay

dry

split

split

Dump pretest calculated heads 0.1870 opt Dump Assayed Heads 0.079 opt Dump Calculated Heads 0.0756 opt Dump Assayed Tails: 0.069 Dump Calculated Tails 0.0693 opt Dump Knelson con + 1/3 cleanup con 0.0063 opt Dump Recovery Knelson con + 1/3 cleanup con vs. assayed head 8.0% Dump Recovery Knelson con + 1/3 cleanup con vs. calculated head 8.3% Dump Recovery Knelson con + 1/3 cleanup con vs. pretest head 3.4%

Apex pretest calculated heads 0.1550 opt Apex Assayed Heads 0.025 opt Apex Calculated Heads 0.0115 opt Apex Assayed Tails: 0.005 Apex Calculated Tails 0.005 opt Apex Knelson con + 1/3 cleanup con 0.0065 opt Apex Recovery Knelson con + 1/3 cleanup con vs. assayed head 26.0% Apex Recovery Knelson con + 1/3 cleanup con vs. calculated head 56.2% Apex Recovery Knelson con + 1/3 cleanup con vs. pretest head 4.2% Overgrind makes fine gold out of some of the coarse, and carbo slimes that carry off fine gold and foul assays.

Page 12 of 12

assay

assay (2/3 to dumps and 1/3 to apex)

PE-18-261