michel in

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The MICHELIN55/80 R 63

for the

CAT 797

Haul Truck

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Michelin Leadership

1891 - First demountable tire

1895 - First pneumatic car tire

1923 - First low pressure tire,the Comfort

1925 - First low pressure truck tire

1937 - First low profile tire, the Pilote

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Michelin Leadership

1946 - Michelin patents the radial tire 1952 - First radial truck tire

1959 - First radial earthmover tire

1969 - First radial tire as standardequipment on US car

1978 - First radial low profile truck tire 1981 - First radial aircraft tire

1995 - First radial low profile loader tire

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...And Yet Another First

MICHELIN 55/80 R 63 Low Pressure/Low Profile design

Breakthrough Technology

A quantum leap over existing

technological limits.

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MICHELIN 55/80 R 63

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A Brief History .... Joint MICHELIN / CAT Development

Officially started development in August 1996

Coordinated Design efforts from Ground Zero

First Tires Produced

July 1997

First Test at Michelin Proving Grounds in Spain

November 1997

Continuous Testing Since 1st Qtr 1998

First Delivery of Tires for the CAT 797

July 1998

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Today's Economic Situation

Decrease in mineral prices

Future uncertain

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Decrease in mineral prices

Future uncertain

The Industry Challenge

Today's Economic Situation

Reduce mining costs

Increase productivity

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Reduce overall tire cost Longer tread life

Improved reliability

Provide new range of tires for newgeneration of trucks

Bigger payloads

Lower cost per ton miles

Without requiring costly transportation

to your job site

The MICHELIN challenge

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Michelin Breakthroughs Extensive Computer Calculation

Enhancements of the thermal andmechanical behavior of all parts of the tire

bead sidewall

shoulder

crown

Optimization of the architecture andmaterials used in the tire

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100 vs. 80 Series

100 Series80 Series

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StandardMichelin

Advanced TechnologyLow Pressure

Tire Architecture

Comparison

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Distinguishing Feature

20% Lower Pressure

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20% Lower Pressure

Advantage

More energy absorbing capacity

Distinguishing Feature

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70

60

50

40

30

20

10

0

1000 2000 3000 4000 5000 6000

Influence of Reduced

Pressures on Tire LifeHours of Use

Tread

Depth

+20%LIFE

Standard Tire Low Pressure Tire

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Features

Smaller Diameter

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Features

Smaller Diameter

Advantage

No additionaltransportation costs

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Key Benefits of

Breakthrough Technology Lower costs

Greater productivity

THROUGH.....

Lower inflation pressure

Improved pressure distribution

Lower center of gravity

Reduced radius and inertia

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55/80 R63

Technical CharacteristicsNominalLoad Capacity 93 MT (102.5 T)

Diameter 3.89 m (12.76 ft)

Width 1.4 m (4.6 ft)

Weight 4500 kg (10,000 lb)

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Primary Design Objective

55/80 R 63 COST / TON-MILE

WILL EQUAL or be lower than

40.00 R 57 COST / TON-MILE

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Confidence in the Design

Design Proven by:

Reduced Scale Field Testing

24/85 R 35

European tests show improvementsover standard 100 aspect tires

44/80 R 57

North American tests validate 20% life

improvement over 40.00 R 57

Over 150 tires now in service

This gives Michelin over 500,000 hoursof actual

FIELD EXPERIENCE!

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Confidence in the Design Design Proven by:

Internal Tests

Conducted at Michelins Earthmover

Proving Grounds - Almeria Spain

Over 800 hours of full scale testingconducted to date

Tests included bead/tread/casingendurance as well as thermal studies

Internal testing of the 55/80 R 63 shows the

tire meets (or exceeds) design parameters!

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CAT 793

Modified for testingat Michelin ProvingGrounds

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SERVICE - Before and After the SaleA MICHELIN Tradition

Trained Michelin Personnel

Insure Proper tire selection thru:

Knowledge of current 40.00 R 57 tireperformance

Review of site conditions prior to truck arrival

Review of proposed cycles / hauls

Heat study at start-up of site

Professional Dealer Organization

Backing of the Michelin Internal Organization

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The TEAM EFFORT to Satisfy

MINE SITE

SERVICINGMICHELINDEALER

TRAINEDMICHELINSALES FORCEANDTECHNICIANS

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Well be there when you need us!

Security Stock to be located

at mine site

at servicing dealer

at Michelin servicing warehouse

at Michelin factories

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Later this year......

Michelins new

Tire Monitoring System...

MEMS

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MEMS Overview

ReaderLink to Mine Mgt. Systems

Tire Tag

PC Data Base

PressTemp.

MichelinMEMS

Hand HeldUnit (HHU)

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WHAT IS THE MEMS?

MEMS is a Four Component System TIRE TAG (MONITOR CHIP)

Mounted in Each Tire

ON-BOARD READER

Centrally Located on Truck

HAND HELD UNIT For Portable Monitoring

LINK TO MINE MANAGEMENT SYSTEMS

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BENEFITS OF MEMS

Increased Vehicle Productivity Increased Tire Life & Cost Reduction

Decreased Service Costs & Improved

Maintenance Efficiency

Improved Operations, Production, &Maintenance

Improved Fuel Economy

Improved Safety

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MICHELIN

55/80 R 63for the

CAT 797

ProvenBreakthrough

Technology