Wireline coring rods Technical Overview

Wireline coring rods Technical Overview Copyright 2013 Boart Longyear. All Rights Reserved.

Copyright 2013 Boart Longyear. All rights reserved. U.S. Patent No. 5,788,401; AU Patent No. 722,567; CA Patent No. 2,216,459. PRODUCTIVITY THROUGH SAFE, RELIABLE AND TRUSTED DESIGN With market-leading thread strength and Boart Longyear's innovative lightweight V-Wall * body option, Boart Longyear s RQ drill rods will expand your drilling capacity while lowering your costs in all ground conditions and drilling applications. Rated for more than 3000 m and field-proven to more than 3800 m, the RQ rod design features a combination of exclusive heat treatments and a patented thread design to provide the ultimate in rod performance and longevity. For more information on coring rods scan with a QR code reader on your smart phone. *Please refer to V-Wall overview on page 6.

ROD THREAD OVERVIEW WIRELINE DRILL ROD THREADS Q THREAD - Boart Longyear s original wireline thread - Easy make and break Copyright 2013 Boart Longyear. All rights reserved. RQ THREAD - Patented upgrade over Q thread - Maximum load efficiency - Increased strength and wear life HD THREAD - Large diameter drilling - Robust thread RQ Thread Design Increased joint taper cuts the number of turns during make and break from three to two, easing make-up and reducing thread wear. The reverse angled load flank reverses radial stresses, reducing total stress levels by 20% compared to Q. This increases load efficiency and load capacity. 25% 20% 15% 10% STRESS REDUCTION Coarse RQ threads (three threads per inch) with increased taper, provide easier make and break as well as anti jamming Load efficiency of 50% provides ultimate strength for demanding applications 5% 0% 15 10 5 0-5 -10 Thread Load Flank Angle Competing deep hole rods Q, HD, and RQ thread designs are proprietary to Boart Longyear. Due to the significant safety risk, Boart Longyear drill rods should never be mixed with other manufacturers rods. Doing so may cause catastrophic equipment failure, leading to bodily injury or death. In addition, mixing rods will void the Boart Longyear warranty. 3

Copyright 2013 Boart Longyear. All rights reserved. JOINT Load Efficiency Load Efficiency is the ratio of stress levels induced in the joint as compared to the midbody under a given load. As such, this ratio is a measure of the quality of the engineering design rather than material strength. RQ provides 50% load efficiency versus Q at 30%. JOINT STRENGTH 1 Material at the ends of RQ rods is heat treated to obtain 175% strength increase over the midbody. Joint Load Capacity can be estimated as the midbody strength, times the heat treated material strength increase, times the joint load efficiency. Q 1 Load Efficiency * 30% RQ 50% Joint Material Strength Joint Load Capacity * * Q 140% Q 42% RQ 175% RQ 88% Midbody Bend Strength Significant research and development has resulted in a proven midbody heat treatment process to resist midbody twisting due to helical whirling. Midbody bend strength is evaluated in full-scale four-point bend testing. Drill Rods Drill Rod Bend Strength 100% Q /RQ Drill Rods 200% * Baseline is midbody tubing at 100% 4

PERFORMANCE Pin Thread Wear Case Hardened Pin Threads Boart Longyear Patented RQ Thread After 60 make/ break cycles, the case hardened pin thread resists wear. Competing Thread After only 30 make/ break cycles, the non-case-hardened pin thread allows adhesion wear. Significant research and development over many years has resulted in a proven case hardening process which remains unmatched in the marketplace. The pin thread crest is case hardened to eliminate the transfer of wear material between threads. This adhesion wear occurs between threads of equal hardness, leading to galling, loss of thread form, and reduced load capacity. Case hardening maintains thread form and delivers all the benefits of the RQ design. Reverse angled load flank Case hardened pin thread crest Cross section of Case Hardened RQ Pin Thread Box Thread Wear Rated Depth Capacity Boart Longyear Patented RQ Thread After 60 make/ break cycles, the box thread shows minimal abrasion wear. Competing Thread After only 30 make/ break cycles, the box thread shows adhesion wear which leads to galling and seized threads. ARQ TK 1500 m (4,900 ft) BQ 1500 m (4,900 ft) BRQ TK 1500 m (4,900 ft) BRQ 3000 m (9,800 ft) NQ 1500 m (4,900 ft) NQ V-WALL 1680 m (5,500 ft) NRQ 3000 m (9,800 ft) NRQ V-WALL 3300 m (11,000 ft) HQ 1500 m (4,900 ft) HQ V-WALL 1680 m (5,500 ft) HRQ 2500 m (8,200 ft) HRQ V-WALL 3000 m (9,800 ft) PHD 1500 m (4,900 ft) PHD V-WALL 2000 m (6,500 ft) Copyright 2013 Boart Longyear. All rights reserved. AU Patent No. 722,567, 2008222974; CA Patent No. 2,216,459. 5

V-Wall OVERVIEW V-Wall for Increased Productivity and Reduced Costs With up to 30% less weight in the drill string, productivity will increase while overall operation costs will be reduced. V-Wall Rods will: - Decrease operator fatigue in rod handling increasing safety and productivity. - Decrease fuel costs in rod transportation, and increase the fuel efficiency of each rig on the site. - Increase drill s rated depth capacity. For example, a drill rated to 2500 m HRQ will be able to manage a 3000 m HRQ V-Wall drill string. - Increase midbody flexibility, which is advantageous in wedging or steering applications, but does not reduce drill string stiffness during coring operations. The figure below demonstrates that the helical whirling response to normal drilling loads (pitch of the twisted corkscrew shape of the drill string) is identical for both standard and V-Wall rods. Copyright 2013 Boart Longyear. All rights reserved. AU Patent No. 2008222974; ZA Patent No. 2009/05921; Patents Pending. Pitch (ft) 60 50 40 30 20 MIDBODY BENDING STRESS 10 300 500 700 900 Speed (RPM) Rod ID Standard Wall V-Wall 1100 1300 1500 6

V-Wall for Faster Inner Tube Tripping Annular clearance between the core barrel and the interior wall of the rod is larger which enables faster core barrel descent speeds. When combined with Quick Descent core barrel technology, tripping speed increases up to 50%. Wall Thickness Transition Zone RQ Case Hardened Pin Thread RQ Box Thread Thru-wall Heat Treatment Thru-wall Heat Treatment Light weight for increased depth capacity and reduced operator fatigue V-Wall PULL-BACK ADVANTAGE PHD V-WALL VS. STRAIGHT WALL HRQ V-WALL VS. STRAIGHT WALL NRQ V-WALL VS. STRAIGHT WALL Drill: BLY LF 90D Drill: BLY LF 90D Drill: BLY LF 90D Pullback Rating: 16,000 lbs (7273 KG) Pullback Rating: 16,000 lbs (7273 KG) Pullback Rating: 16,000 lbs (7273 KG) 0m 250 m 500 m PHD STRAIGHT 417 M PHD V-WALL 542 M HQ STRAIGHT 634 M +30% 750 m NQ STRAIGHT 931 M HRQ V-WALL 773 M 1,000 m +22% NRQ V-WALL 1061 M +14% 1250 m Copyright 2013 Boart Longyear. All rights reserved. AU Patent No. 2008222974; ZA Patent No. 2009/05921; Patents Pending. Q and LF are trademarks of Boart Longyear. Increased inside diameter for faster inner tube tripping Ratings are rig specific. For reference only. 7

CORING RODS TECHNICAL INFORMATION ARQTK Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 130 kn 29,250 lbf Rated Torque (Operating or Make-Up) 800 Nm 590 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 381 Nm 281 ft-lb Recommended Minimum Make-Up Torque 339 Nm 250 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 74 733 kpa 10,839 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 90 138 kpa 13,073 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 94 464 kpa 13,700 psi ARQTK Weights & Measures Rod Midbody Outer Diameter 44.83 mm 1.76 in Rod Midbody Inner Diameter 37.39 mm 1.47 in Rod Joint Inner Diameter 37.39 mm 1.47 in Rod Stiffness (Moment of Inertia) 2 538 mm 4 3.9 in 4 Rod Weight per Unit Length 3.77 kg/m 2.53 lb/ft Rod Content Weight (Water) per Unit Length 1.09 L/m 0.09 gal/ft Copyright 2013 Boart Longyear. All rights reserved. Q and RQ are trademarks of Boart Longyear BQ Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 130 kn 29,250 lbf Rated Torque (Operating or Make-Up) 800 Nm 590 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 504 Nm 416 ft-lb Recommended Minimum Make-Up Torque 405 Nm 300 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 39 500 MPa 5,729 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 93 200 MPa 13,511 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 97 300 MPa 14,117 psi BQ Weights & Measures Rod Midbody Outer Diameter 55.9 mm 2.19 in Rod Midbody Inner Diameter 46.1 mm 1.81 in Rod Joint Inner Diameter 46.1 mm 1.81 in Rod Weight per Unit Length 6.25 kg/m 4.20 lb/ft Rod Content Weight (Water) per Unit Length 1.67 L/m 0.13 gal/ft 8

BRQTK Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 200 kn 45,000 lbf Rated Torque (Operating or Make-Up) 895 Nm 660 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 680 Nm 500 ft-lb Recommended Minimum Make-Up Torque 405 Nm 300 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 56 418 kpa 8,182 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 74 703 kpa 10,834 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 72 506 kpa 10,516 psi BRQTK Weights & Measures Rod Midbody Outer Diameter 56.03 mm 2.20 in Rod Midbody Inner Diameter 48.32 mm 1.90 in Rod Joint Inner Diameter 48.32 mm 1.90 in Rod Stiffness (Moment of Inertia) 5 362 mm 4 8.3 in 4 Rod Weight per Unit Length 4.95 kg/3 m 3.30 lb/10 ft Rod Content Weight (Water) per Unit Length 1.83 L/m 0.15 gal/ft BRQ Performance Rating Rated Drilling Depth by Joint Strength 3 000 m 9,800 ft Rated Pullback 250 kn 56,250 lbf Rated Torque (Operating or Make-Up) 1 500 Nm 1,100 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m 950 Nm 750 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 1000m 680 Nm 500 ft-lb Recommended Minimum Make-Up Torque 405 Nm 300 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 61 300 MPa 8,891 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 93 200 MPa 13,511 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 97 300 MPa 14,117 psi BRQ Weights & Measures Rod Midbody Outer Diameter 55.9 mm 2.19 in Rod Midbody Inner Diameter 46.1 mm 1.81 in Rod Joint Inner Diameter 46.1 mm 1.81 in Rod Weight per Unit Length 6.25 kg/m 4.20 lb/ft Rod Content Weight (Water) per Unit Length 1.67 L/m 0.13 gal/ft Copyright 2013 Boart Longyear. All rights reserved. RQ is a trademark of Boart Longyear. NOTE: All rod capacities and failure loads were determined through simultaneous torque and tension load testing by an independent party. An appropriate safety factor has been applied in determining the ratings above. These ratings apply to new, unused rods of Boart Longyear manufacture, in a straight vertical down hole, assuming compliance to Boart Longyear Care and Handling or Product Literature and standard core drilling practices. Actual performance may vary depending on operating conditions and drilling practices. Actual Burst and collapse pressure ratings will be reduced under drilling loads. Increase make-up torque to match operating torque in deep downholes. Operating torque should not exceed make-up torque. 9

CORING RODS TECHNICAL INFORMATION NQ Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 200 kn 45,000 lbf Rated Torque (Operating or Make-Up) 1 200 Nm 900 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m Recommended Minimum Make-Up Torque 600 Nm 442 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 31 300 kpa 4,452 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 75 500 kpa 10,952 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 73 900 kpa 10,724 psi NQ Weights & Measures Rod Midbody Outer Diameter 69.90 mm 2.75 in Rod Midbody Inner Diameter 62.00 mm 2.38 in Rod Joint Inner Diameter 60.30 mm 2.38 in Rod Stiffness (Moment of Inertia) 11408 mm 4 20.4 in 4 Rod Weight per Unit Length 7.79 kg/m 5.23 lb/ft Rod Content Weight (Water) per Unit Length 2.86 L/m 0.23 gal/ft Copyright 2013 Boart Longyear. All rights reserved. Q and V-Wall are trademarks of Boart Longyear. NQ V-Wall Performance Rating Rated Drilling Depth by Joint Strength 2 000 m 6,500 ft Rated Pullback 200 kn 45,000 lbf Rated Torque (Operating or Make-Up) 1 200 Nm 900 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 1 000 Nm 750 ft-lb Recommended Minimum Make-Up Torque 600 Nm 452 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 31 300 kpa 4,542 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 63 387 kpa 9,193 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 52 421 kpa 7,603 psi NQ V-Wall Weights & Measures Rod Midbody Outer Diameter 69.9 mm 2.75 in Rod Midbody Inner Diameter 62.0 mm 2.44 in Rod Joint Inner Diameter 60.3 mm 2.38 in Rod Stiffness (Moment of Inertia) 11 408 mm 4 17.7 in 4 Rod Weight per Unit Length 20.42 kg/3 m 45.0 lb/10 ft Rod Content Weight (Water) per Unit Length 2.97 L/m 0.24 gal/ft 10

NRQ Performance Rating Rated Drilling Depth by Joint Strength 3 000 m 9,800 ft Rated Pullback 330 kn 74,255 lbf Rated Torque (Operating or Make-Up) 2 400 Nm 1,750 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000 m 1 400 Nm 1,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 1000 m 1 000 Nm 750 ft-lb Recommended Minimum Make-Up Torque 600 Nm 452 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 49 700 kpa 7,215 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 75 513 kpa 10,952 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 73 943 kpa 10,724 psi NRQ Weights & Measures Rod Midbody Outer Diameter 69.90 mm 2.75 in Rod Midbody Inner Diameter 60.20 mm 2.37 in Rod Joint Inner Diameter 60.20 mm 2.38 in Rod Stiffness (Moment of Inertia) 13 135 mm 4 20.4 in 4 Rod Weight per Unit Length 7.79 kg/m 5.23 lb/ft Rod Content Weight (Water) per Unit Length 2.86 L/m 0.23 gal/ft NRQ V-Wall Performance Rating Rated Drilling Depth by Joint Strength 3 300 m 10,800 ft Rated Pullback 330 kn 74,255 lbf Rated Torque (Operating or Make-Up) 2 400 Nm 1,750 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m 1 400 Nm 1,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 1000m 1 000 Nm 750 ft-lb Recommended Minimum Make-Up Torque 600 Nm 452 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 49 700 kpa 7,215 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 63 387 kpa 9,193 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 52 421 kpa 7,603 psi NRQ V-Wall Weights & Measures Rod Midbody Outer Diameter 69.90 mm 2.75 in Rod Midbody Inner Diameter 62.00 mm 2.44 in Rod Joint Inner Diameter 60.30 mm 2.38 in Rod Stiffness (Moment of Inertia) 11 408 mm 4 17.7 in 4 Rod Weight per Unit Length 20.42 kg/3 m 45.0 lb/10 ft Rod Content Weight (Water) per Unit Length 2.97 L/m 0.24 gal/ft Copyright 2013 Boart Longyear. All rights reserved. RQ and V-Wall are trademarks of Boart Longyear. NOTE: All rod capacities and failure loads were determined through simultaneous torque and tension load testing by an independent party. An appropriate safety factor has been applied in determining the ratings above. These ratings apply to new, unused rods of Boart Longyear manufacture, in a straight vertical down hole, assuming compliance to Boart Longyear Care and Handling or Product Literature and standard core drilling practices. Actual performance may vary depending on operating conditions and drilling practices. Actual Burst and collapse pressure ratings will be reduced under drilling loads. Increase make-up torque to match operating torque in deep downholes. Operating torque should not exceed make-up torque. 11

CORING RODS TECHNICAL INFORMATION HQ Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 250 kn 56,250 lbf Rated Torque (Operating or Make-Up) 2 000 Nm 1,500 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 1 200 Nm 900 ft-lb Recommended Minimum Make-Up Torque 1 010 Nm 750 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 30 000 kpa 4,365 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 64 000 kpa 9,850 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 60 000 kpa 8,770 psi HQ Weights & Measures Rod Midbody Outer Diameter 88.90 mm 3.50 in Rod Midbody Inner Diameter 77.8 mm 3.06 in Rod Joint Inner Diameter 77.8 mm 3.06 in Rod Stiffness (Moment of Inertia) 31 668 mm 4 49.1 in 4 Rod Weight per Unit Length 11.44 kg/m 7.7 lb/ft Rod Content Weight (Water) per Unit Length 4.8 L/m 0.38 gal/ft Copyright 2013 Boart Longyear. All rights reserved. Q and V-Wall are trademarks of Boart Longyear. HQ V-Wall Performance Rating Rated Drilling Depth by Joint Strength 1 680 m 5,500 ft Rated Pullback 250 kn 56,250 lbf Rated Torque (Operating or Make-Up) 2 000 Nm 1,500 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m 1 200 Nm 900 ft-lb Recommended Minimum Make-Up Torque 1 010 Nm 750 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 30 000 kpa 4,365 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 50 200 kpa 7,280 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 29 000 kpa 4,206 psi HQ V-Wall Weights & Measures Rod Midbody Outer Diameter 88.9 mm 3.50 in Rod Midbody Inner Diameter 81.0 mm 3.19 in Rod Joint Inner Diameter 77.8 mm 3.06 in Rod Stiffness (Moment of Inertia) 24 592 mm 4 38.1 in 4 Rod Weight per Unit Length 27.3 kg/3 m 60.0 lb/10 ft Rod Content Weight (Water) per Unit Length 5.14 L/m 0.40 gal/ft 12

HRQ Performance Rating Rated Drilling Depth by Joint Strength 2 500 m 8,200 ft Rated Pullback 510 kn 115,000 lbf Rated Torque (Operating or Make-Up) 3 500 Nm 2,600 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000 m 2 750 Nm 2,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 1000 m 2 000 Nm 1,500 ft-lb Recommended Minimum Make-Up Torque 1 000 Nm 750 ft lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 45 000 kpa 6,458 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 64 000 kpa 9,850 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 60 000 kpa 8,770 psi HRQ Weights & Measures Rod Midbody Outer Diameter 88.9 mm 3.50 in Rod Midbody Inner Diameter 77.9 mm 3.06 in Rod Joint Inner Diameter 77.9 mm 3.06 in Rod Stiffness (Moment of Inertia) 31 668 mm 4 49.1 in 4 Rod Weight per Unit Length 11.44 kg/m 7.7 lb/ft Rod Content Weight (Water) per Unit Length 4.8 L/m 0.40 gal/ft HRQ V-Wall Performance Rating Rated Drilling Depth by Joint Strength 3 050 m 10,000 ft Rated Pullback 510 kn 115,000 lbf Rated Torque (Operating or Make-Up) 3 500 Nm 2,600 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m 2 750 Nm 2,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 1000m 2 000 Nm 1,500 ft-lb Recommended Minimum Make-Up Torque 1 000 Nm 750 ft-lb API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 44 500 kpa 6,458 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 50 200 kpa 7,280 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 29 00 kpa 4,206 psi HRQ V-Wall Weights & Measures Rod Midbody Outer Diameter 88.90 mm 3.50 in Rod Midbody Inner Diameter 81.00 mm 3.19 in Rod Joint Inner Diameter 77.80 mm 3.06 in Rod Stiffness (Moment of Inertia) 2 4592 mm 4 38.1 in 4 Rod Weight per Unit Length 27.3 kg/3 m 60.0 lb/10 ft Rod Content Weight (Water) per Unit Length 5.14 L/m 0.40 gal/ft Copyright 2013 Boart Longyear. All rights reserved. RQ and V-Wall are trademarks of Boart Longyear. NOTE: All rod capacities and failure loads were determined through simultaneous torque and tension load testing by an independent party. An appropriate safety factor has been applied in determining the ratings above. These ratings apply to new, unused rods of Boart Longyear manufacture, in a straight vertical down hole, assuming compliance to Boart Longyear Care and Handling or Product Literature and standard core drilling practices. Actual performance may vary depending on operating conditions and drilling practices. Actual Burst and collapse pressure ratings will be reduced under drilling loads. Increase make-up torque to match operating torque in deep downholes. Operating torque should not exceed make-up torque. 13

CORING RODS TECHNICAL INFORMATION PHD Performance Rating Rated Drilling Depth by Joint Strength 1 500 m 4,900 ft Rated Pullback 450 kn 100,000 lbf Rated Torque (Operating or Make-Up) 4 000 Nm 3,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m Recommended Minimum Make-Up Torque API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 21 614 kpa 3,135 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 62 000 kpa 8,998 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 50 026 kpa 7,255 psi PHD Weights & Measures Rod Midbody Outer Diameter 114.40 mm 4.50 in Rod Midbody Inner Diameter 101.40 mm 4.0 in Rod Joint Inner Diameter 101.40 mm 4.0 in Rod Stiffness (Moment of Inertia) 80 423 mm 4 124.7 in 4 Rod Weight per Unit Length 17.40 kg/m 11.70 lb/ft Rod Content Weight (Water) per Unit Length 8.14 L/m 0.65 gal/ft Copyright 2013 Boart Longyear. All rights reserved. V-Wall is a trademark of Boart Longyear. PHD V-Wall Performance Rating Rated Drilling Depth by Joint Strength 2 000 m 6,500 ft Rated Pullback 450 kn 100,000 lbf Rated Torque (Operating or Make-Up) 4 000 Nm 3,000 ft-lb Recommended Minimum Make-Up Torque for Deep Holes over 2000m Recommended Minimum Make-Up Torque for Deep Holes over 1000m Recommended Minimum Make-Up Torque API Theoretical Burst Pressure at Box Shoulder (per API bulletin 5C3) 21 700 kpa 3,145 psi API Theoretical Burst Pressure at Midbody (per API bulletin 5C3) 38 849 kpa 5,634 psi API Theoretical Collapse Pressure at Midbody (per API bulletin 5C3) 15 852 kpa 2,299 psi PHD V-Wall Weights & Measures Rod Midbody Outer Diameter 114.00 mm 4.50 in Rod Midbody Inner Diameter 106.00 mm 4.19 in Rod Joint Inner Diameter 102.0 mm 4.0 in Rod Stiffness (Moment of Inertia) 53 739 mm 4 83.3 in 4 Rod Weight per Unit Length 37.30 kg/3 m 82.16 lb/10 ft Rod Content Weight (Water) per Unit Length 8.80 L/m 0.70 gal/ft 14

NOTES 15

Global Headquarters Boart Longyear 10808 South River Front Parkway Suite 600 South Jordan, Utah 84095 United States of America info@boartlongyear.com Tel: +1 801 972 6430 Fax: +1 801 977 3374 Latin America Boart Longyear Portal Riesco Av. El Salto 4001, Huechuraba Santiago, Chile 858 0641 infochile@boartlongyear.com Tel: +56 2 595 3300 Fax: +51 242 671 Canada Boart Longyear 2442 South Sheridan Way Mississauga, Ontario Canada L5J 2M7 info@boartlongyear.com Tel: +1 905 822-7922 Fax: +1 905 822-7232 Europe Boart Longyear 12 Avenue des Morgines CH1213 Petit-Lancy, Geneva, Switzerland infoeu@boartlongyear.com Tel: +41 22 709 0800 Fax: +41 22 709 0801 Asia Pacific Boart Longyear 26 Butler Boulevard Adelaide, 5950 Australia infoap@boartlongyear.com Tel: +61 8 8375 8375 Fax: +61 8 8375 8497 MINING AND EXPLORATION DRILLING PRODUCTS Copyright 2013 Boart Longyear. All rights reserved. Diamond Products Genuine Q Wireline Tooling Rods and Casing www.boartlongyear.com ASX: BLY Jan 2013