Quadra Mining Limited

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Quadra Mining Limited

• Robinson Nevada Mining Company
• September 30, 2004

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Senior Personnel - RNMC
Senior personnel have an average of 22 years mine
experience. Goal is to have all process personnel
in place by November 1st. Benefits will average
around 35.
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Environmental

• Permitting
• All permits in place. Groundwater permit
  NEV92105 currently under renewal by State of
  Nevada.
• Use of Liberty Pit for short-term mine waste
  backfill under development with submittal to NDEP
  before October 30, 2004. Demonstration will
  involve a modification to the current Waste
  Management Plan which will also address mine dump
  development and concurrent dump closure.

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WEEKLY MINE PERFORMANCE (YTD, 2004)ROBINSON MINE
Total Tons per Week
Production Summary YTD (as of Sep 26,
2004) Actual Budget of Target Tons 7,397,352
7,302,840 101.3
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Budget / LOM Plan 2004-2014Metric
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MINE OPERATIONSWorking Equipment Schedule
Unit Qty. Jun Jul Aug Sep Oct Nov Dec Jan05 Cat
785 6 used X Komatsu 830e 3 used X-(Jun 21) Cat
793 2 new X-(Aug 26, 31) Cat 793 2
new X-(Sept 2, 23) Cat 793 3 new X-
(Nov 20, 23, 29) Cat 793 2 new X- (Dec 1,
2) Cat 793 5 new X-(11-21) OK RH120 1
used X LeTourneau L1800 1 used X-(Jun 15) PH
2300 1 used X-(Sep 9) Bucyrus 495HR 1
new X-(Sep 15) Hitachi 5500 1 new X-(Nov
8) DMM2 1 used X Bucyrus 49R 1 new X-(Sep
26) IR Viper 1 new X-(Nov 8)
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Production Fleet Robinson Mine
495HR Stats Dipper Payload 100T Capacity 56
YD3 Dumping Height 33 Height 68 Weight
1,440 Tons Daily Production Rate 100,000 TPD
Bucyrus-Erie 495HR Rope Shovel
Electric Commissioned September 15, 2004
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Production Fleet Robinson Mine
PH 2300 Stats Dipper Payload 66T Capacity
35 YD3 Dumping Height 26 Height 52 Weight
950 Tons Daily Production Rate 70,000 TPD
PH 2300 Rope Shovel Electric Commissioned
September 9, 2004
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Production Fleet Robinson Mine
CAT 793C Stats Box Capacity 255T Operating
Height 21 Dumping Height 43.5 Horsepower
2300 hp Weight 423 Tons Daily Production
Rate 16,000 TPD
Caterpillar 793C Haul Truck First Trucks
Commissioned August 26 31, 2004
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Production Fleet Robinson Mine
Bucyrus-Erie 49RIII Drill Electric Commissioned
September 26, 2004
Stats Hole Diameter 12-1/4 13-3/4 Maximum
Drill Depth 70 Operating Height
102.5 Horsepower 2300 hp Weight 170
Tons Assigned to BE 495HR shovel bench
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Production Fleet Robinson Mine
L1800 Stats Dipper Payload 60T Capacity 33
YD3 Dumping Height 19 Daily Production
Rate 35,000 TPD L1800 _at_ Robinson used to
make-up production during PMs and for stockpile
re-handling
LeTourneau L1800 Wheel Loader Commissioned Used
June 21, 2004
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Production Fleet Robinson Mine
EX5500 Stats Dipper Payload 62T Capacity 35
YD3 Horsepower 2 x 1,350hp diesel engines Daily
Production Rate 60,000 TPD
EX5500 (similar to Robinson unit)
Hitachi EX5500 Diesel Commissioning Scheduled
for November 8, 2004
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First Day of Mining May 27, 2004
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Current Mine Operation Sep 27, 2004
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MANPOWER RAMP-UP SCHEDULEWGN Mining Contractor
Date Labor Crews, Shift, Days per Week 06/07 12 2
Crews, 10-Hr. Shift, 6 Days per Week 06/21 19 -
06/28 42 07/12 67 3 Crews, 10-Hr. Shift,
6 Days per Week 07/19 73 3 Crews, 10-Hr. Shift, 7
Days per Week 07/28 89 08/07 109 4 Crews,
12-Hr. Shift, 7 Days per Week Sep 128
Oct 135 Nov 143 Dec 153
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Mining Contract -- Washington
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Mill Projects

• Improvements and Recommissioning Prior to
  Start-up
• Replaced bucket conveyor with conventional
  conveyor.
• Updated process control instrumentation.
• Completed tailings dam extension.
• Aligned SAG and ball mill gears.
• Replaced bus bars for 480 volt transformers.
• Replaced concave and mantle liners at primary
  crusher.
• Re-spliced all conveyors.
• Replaced trommel screens on Sag and Ball Mills

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Bucket Conveyor Replacement Project
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Concave Reline of Primary Crusher
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Mill Production

• Actual Production
• First mill production August 31, 2004.
• Over 600,000 tons milled through 9/28/04.
• Over 5,000 tons of concentrate produced through
  9/28/04.
• Full mill production during October, 2004.
• Gravity gold circuit to be operational November,
  2004

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10,000 Horsepower SAG Mill
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8750 Horsepower Ball Mills
Concave Reline of Primary Crusher
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3000 Cubic Foot Flotation Machine
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Concentrate Haulage From Mine Site to
PortCURRENT STATUS

• Concentrates will be trucked from RNMC to
  Wendover, UT, where concentrates will be
  trans-loaded from truck to rail.
• Pan Western Transportation Specialists has been
  selected for truck and trans-load to rail.
• Capital costs of trucks and truck-to-rail
  trans-loading facility to the account of the
  trucking company.
• Union Pacific Railroad has been contracted for
  gondola cars and rail transport.
• The Port of Sacramento, California has been
  selected as the facility for trans-loading from
  rail to cargo ship.

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Quadra Mining Limited

• Robinson Nevada Mining Company
• September 30, 2004