EHS Report 2024
Environmental, Health, and Safety Report

Environmental, Health, and Safety Report 2024

CoorsTek GK Group
Environmental, Health, and Safety Report 2024

Editor’s Note

Contents

This is our 22nd report since our first report, titledEnvironmental Report, was published in 2003. In
this report, we present the business, social andhuman, and environmental activities of theCoorsTek GK Group (the Group), which includes
CoorsTek GK (the Company) and our subsidiaries,
as they reflect our commitment to environmental,
health, and safety activities. Our purpose is tocommunicate the Group’s activities in a way that ourcustomers, shareholders, employees, people inlocal communities, and other stakeholders caneasily grasp.

The CoorsTek Way

P02

CoorsTek’s Corporate Policy

P02

Message from the Company

P03

Environmental Report■Environmental, Health, and Safety Policy

P04■Environmental Management Structure

P05

Scope of the Report
This report covers the following facilities and affiliated companies.

■Objectives and Results of Environmental
Activities

CoorsTek GK

P06■Environmental Impact

P08■Mitigation of Global Warming

P09■Waste Management

P10■Management of Chemical Substances

P10■Green Procurement

P12

P13

Remarks:

P18

Relationships with Local Communities■Partnership with Local Communities

P21

30, Soya, Hadano City, Kanagawa
Prefecture

・The above four facilities and one consolidated subsidiary arecollectively referred to as “business sites.”
・The Head Office is not included in the environmental reportingdata.
・In this report, the group company of CoorsTek, Inc., the parent
company, is collectively referred to as the CoorsTek Group.
・ In this report, CoorsTek GK and the above consolidated
subsidiaries are referred to as CoorsTek GK Group.
・For corporate data, please refer to our website.
https://www.coorstek.co.jp/jpn/corporate/overview.html■Occupational Safety and Health

P21■Hadano Facility■CoorsTek Tokuyama Corporation
2-1-32, Eguchi, Shunan City, Yamaguchi Prefecture

P16■Responsibility to Local Communities

378, Oaza Oguni-machi, Oguni-machi,
Nishiokitama-gun, Yamagata
Prefecture

Consolidated Subsidiaries■Objectives and Results of Occupational Safety
and Health Management
P17
Management■Oguni Facility

1, Minami-Fuji, Ogakie-cho, Kariya City,
Aichi Prefecture■Nagasaki Facility 296, Momozugo, Kawatana-cho,Higashisonogi-gun, Nagasaki
Prefecture

Safety and Health Report■Occupational Safety and Health Management
Structure
P16■Occupational Accidents

Osaki Wiz Tower, 11-1, Osaki 2-chome,
Shinagawa-ku, Tokyo■Kariya Facility■History of Our Commitment to theEnvironment■Head Office

Reporting Period
This report presents the results of activities in FY
2023 (January 1, 2023 to December 31, 2023) andother content.
Publication
Previous issue: April 2023
Next issue: April 2025 (scheduled)
Reference Guidelines
Environmental Accounting Guidelines (FY year 2005
version), Ministry of the Environment of Japan1

Environmental, Health, and Safety Report 2024

Corporate Philosophy

The CoorsTek Way

Corporate Philosophy

The CoorsTek Way
VISION STATEMENT
We make the world measurably better.

Better Today• We are inspired by our legacy of innovation• We take pride in what we do• We provide outstanding value for our customers, teammates, families, communities, and the world• We deliver leading-edge solutions to improve the lives of people in the communities we serve

Better Together• We value the inherent worth and dignity of each individual• We share responsibility, risk, opportunity, and reward• We collaborate to solve our customers’ most complex challenges• We act with consistency, honesty, and respect

Better Tomorrow• We push the limits of what’s possible• We evolve to meet the challenges of the future• We think globally and act locally• We commit to near-term results with a long-term view

CoorsTek’s Corporate Policy
1. Prioritizing the Customer
We accord the highest priority to customers' satisfaction by providing value-rich products and services
based on new perspectives and dynamic ideas.
2. Enhancing Corporate Value
Through constant change in management practices and technological innovation, we strive
to garner the trust and meet the expectations of all who are stakeholders in the CoorsTek Group.
3. Contributing to Society
We place the highest consideration on human safety and environmental conservation, and asa good corporate citizen, we aim to achieve a symbiotic relationship with the global communityand local communities in which we have a presence by contributing to their developments.
4. Conducting Fair BusinessWe are fully aware of our social responsibilities as a corporate entity, and we obey the rules
and established norms of Japan and other countries as we conduct business fairly and with integrity.
5. Respecting the Individual
We respect each employee's individuality and creativity, and we foster a fair and generous
environment in which he or she can grow and evolve as an individual.
2

Environmental, Health, and Safety Report 2024

Corporate Message

Message from the Company
We make the world measurably better
The CoorsTek Group is a technical ceramics manufacturer with over 110 years of history. Withthe vision of " We make the world measurably better", we continue to provide better products ina wide range of business areas through development based on the direct needs of customers
and the market.
At the same time, we practice our Business Policy, which is to "place the highest consideration
on human safety and environmental conservation.” We believe that environmental conservation,
health, and safety are key elements to continuing our business, therefore we contribute to thedevelopment of society through a variety of activities.
In 2021, we launched the Sustainability Steering Committee to accelerate our commitment tosustainability. We also aim to achieve higher goals in the markets and products we serve, and in
our process of continuous innovation centered on improving energy efficiency and reducing waste.
In terms of environment, CoorsTek GK is working on activities aimed at preventing global warming
and effectively using resources. In terms of global warming prevention, CO 2 emissions (Scope 1,2) were reduced by 28% compared to 2022. This was due in part to a decrease in production volume,
but also due to a 30% increase in the proportion of renewable energy (hydropower) in purchased
electricity compared to the previous year, and various energy-saving activities. We will continue topromote efforts to further reduce CO2 emissions, make effective use of resources, and reduce
chemical substances through more efficient energy use and the use of renewable energy.
In terms of health and safety, we conducted risk reduction activities and improve ergonomics
through risk assessments. In addition, in order to ensure the safety of our contractors, we worked
to prevent accidents by checking each time high-risk work such as work at heights or in confined
spaces. We will continue these activities in the future.
In 2023, we also conducted human performance education for all employees with the aim of
improving human performance*1. We will also work to foster a safety culture by strengthening
human resource development while conducting risk reduction activities.
From now on, we will continue to grow our business and improve our corporate value andpromote efforts toward sustainability. We will also promote various activities to ensure stakeholder
satisfaction. We ask for your continued guidance and encouragement.

CoorsTek GK*1 Improvement of human performance: To understand the human behavior and characteristics behind human error, and to improve
individual and organizational capabilities and performance in order to reduce errors.

Environmental Report3Environmental, Health, and Safety Report 2024

Environment report
Environmental, Health, and Safety Policy
Conducting operations safely and in an environmentally responsible mannerrequires a diligent attitude and proactive steps. At CoorsTek, we believe ACTION is
the key to achieving ZERO injuries or environmental incidents.
Anticipate potential hazards and take action to prevent them from doing harm
Commit to protecting yourself, employees, and the environment
Think about the contributing factors of injuries, accidents, and illnesses and learn from them
Initiate continual process and program improvements
Own it! It is up to us to prevent injuries, illnesses, and pollution
Network with others to share best practices and elevate our performance beyond compliance

Environmental activities
The CoorsTek KK Group regards environmental conservation as a key management issue. We are engaged
in environmental conservation activities on a continual and voluntary basis, guided by the Environmental Policy
we established in 1989.

CoorsTek GK Group Environmental Policy
The CoorsTek GK Group works to bring together materials, technologies, and people to create new values.
In carrying out our activities, we promote environmental conservation in the belief that the Earth’s resources
are invaluable. Accordingly, we promote the following management concepts:(1) Position environmental conservation as a critical issue at the heart of our business.
(2) Adhere to environmental laws, environmental guidelines agreed to by CoorsTek GK Group, and othervoluntary environmental protection standards.
(3) Reduce the environmental impact of our business activities and prevent pollution.
(4) Set voluntarily action plans such as energy conservation to help prevent global warming, including
policies such as zero emissions, through the effective use of resources and reducing the use ofchemical substances.
(5) Promote green procurement, including prioritizing the selection of raw materials that have minimal
environmental impact.
(6) Contribute to society by developing and providing superior environmental technology and products,
cooperate with communities, and undertake environmental protection activities in general.

4Environmental, Health, and Safety Report 2024

Environmental Management Structure
Environmental management structure
In order to oversee and promote
environmental management, we haveappointed the Chief Environmental
Management Officer and the Group
Environmental Manager within the groupand have appointed the Site Environmental
Management Officer and the Site
Environmental Manager at eachmanufacturing site.
All business sites operate underenvironmental management systems thatcomply with ISO14001 standards.

◆Management Organizational Structure◆ISO 14001 Certification Status (as of March 31, 2024)
Business Site

Initial Certification Date

Certification Body

Oguni Facility

Feb. 1998

Intertek Certification Japan Ltd.

Hadano Facility

Mar. 1998

Intertek Certification Japan Ltd.

Kariya Facility

Apr. 2000 *1

Intertek Certification Japan Ltd.

Nagasaki Facility

Dec. 2000 *2

Intertek Certification Japan Ltd.

CoorsTek Tokuyama Corp.

Mar. 1998

Japan Quality Assurance Organization*1 The Kariya Facility returned the certification in April 2009. Subsequently, it was recertified in November 2017.
*2 The Nagasaki Facility returned the certification in December 2009. Subsequently, it was recertified in March 2016.

Environmental, health, and safety audits
Internal audits
The Chief Environmental Management Officer and EHS personnel conduct compliance audits and activity
assessments at each business site. The CoorsTek GK Group uses its standards to verify compliance withenvironmental laws and regulations and assess the status of the Company’s environmental activities. EHS
personnel follow up on assessment results and work to improve environmental efforts.

Hadano Facility

Nagasaki Facility

Kariya Facility

CoorsTek Tokuyama

5

Oguni Facility

Environmental, Health, and Safety Report 2024

Environmental education
In order to better understand and enhance our environmental conservation skills, all Group employees undergo
environmental education on a regular basis. The content of the education varies according to positions andresponsibilities. To ensure compliance and enhance the skills of individual employees, the Group supports andencourages employees to acquire qualifications and attend lectures.
Contractors working at the Group’s sites are informed of environmental and safety requirements.
Number of Qualified EHS Employees
NumberMajor qualifications

Number of Qualified EHS Employees

Pollution control managers

59

Major qualifications

Environmental education
for new employees(Nagasaki Facility)

Environmental skill
improvement education(CoorsTek Tokuyama)

Objectives and Results of Environmental Activities

Energy managers
Pollution control
managers
Environment
measurement
engineers
Energy managers
Specially controlled industrial
Environment
waste managers

Number
24

45

3

17

14 4

measurement engineers

Healthofficerscontrolled
Specially
industrial
waste managers
Workingenvironment
measurement
experts
Health officers

32

13

17

24

Working environment
measurement experts

5Green manufacturing to reduce environmental impact
Objectives
Environmental
Activities
and Results
Overview
of ofvoluntary
environmental
actionplans
The CoorsTek GK Group has formulated a voluntary environmental action plan and it conducts activities toreduce environmental impacts of business activities.

◆FY2023 Voluntary Environmental Action Plan and Performance
Priority Initiatives

FY2023 Voluntary Environmental Action Plan

Global warming mitigation･Average improvement of 1% or more per year inratio to direct costs (crude oil equivalent/DC) in thepast 5 years

Results

Evaluation*1･Average increase of 0.9%
per year△

Effective use of resources

Reduction of ratio of total waste discharged inrelation to input (value vs. waste / input) over
FY2022 level･0.08％ decrease of theprevious year’s level◎*1 ◎ Objective exceeded ○ Objective achieved △ Objective not achieved*2 PRTR (Pollutant Release and Transfer Register) is a system for ascertaining, aggregating, and publishing data on the amounts of harmful chemical
substances released into the environment or transferred offsite and the sources of such substances◆FY2024 Voluntary Environmental Action Plan
Priority Initiatives

FY2024 Voluntary Environmental Action Plan

Global warming
mitigation

Average improvement of 1% or more per year in ratio to direct costs (crude oil equivalent/DC) in the past 5 years

Effective use ofresources

・Resource reduction goals are set at each facility.
(Hadano Facility)
1) Reduction of ratio of waste discharged over FY2023 level2) 7% reduction in water usage over total hours worked compared to a FY2021 baseline3) Reduction of the usage of PRTR substances by at least 1% compared to FY2023 level(Kariya Facility)
1) Reduction of ratio of total waste discharged in relation to input (value vs. waste/input) over FY2023 level2) 7% reduction in water usage over total hours worked compared to a FY2021 baseline(Oguni Facility)
1) Reduction final disposal rate of waste (landfill waste/total emissions (recycled, landfilled, valuable)) comparedto FY2023 level (5.52%)
2) 7% reduction in water usage over total hours worked compared to a FY2021 baseline(Nagasaki Facility)
1) Reduction of total landfill waste by 5% compared to FY2022 level2) Reduction of water usage by 2% compared to FY2021 level(CoorsTek Tokuyama)
1) Reduction of waste to below FY2022 level2) Reduction of water usage to below FY2022 level

6

Environmental, Health, and Safety Report 2024

Environmental accounting
CoorsTek GK Group assesses environmental costs and applies the results to business activities.

◆Environmental Costs

Unit: Millions of yen

Classification

Content

Expenditure*1

Costs*2

114.8

661.8

7.1

402.3

89.9

107.3

17.8

152.2

0

0

0

32.1

0

46.4

0

0.4

0

0.1

114.8

740.8

Ⅰ Business area costs

Ⅴ Social activity costs

Prevention of pollution to atmosphere,
water, soil, etc.
Mitigation of global warming,
conservation of ozone layer, etc.
Effective utilization of resources,
recycling of waste, etc.
Green procurement, product recovery
and recycling, etc.
Monitoring of environmental impacts,
planting of greenery, etc.
Development of environmentallyconscious products etc.
Disclosure of information etc.

Ⅵ Environmental remediation costs

Natural restoration etc.

Ⅰ- i Pollution prevention costs
Ⅰ- ii Global environmental
conservation costs
Ⅰ- iii Resource circulation costs
Ⅱ Upstream/downstream costs
Ⅲ Administration costs
Ⅳ R&D costs

Total environmental cost (millions of yen)

Period: January 2023 to December 2023. Subjects: 5 business sites*1 Expenditures: of expenditures subject to depreciation, amounts for environmental conservation are reported.
*2 Costs: total amounts of expenditures for environmental conservation and depreciation of facilities are reported (including labor costs).

◆Environmental conservation effects
The decrease in energy consumption, water consumption, waste volume, and monetary value are due to theimpact of decreased production.

Actual Effects

Environmental Impact
Compared to FY2022

Monetary Value of Effects

Energy consumption

decrease of 358,000 GJ

decrease of 550 million yen

Water consumption

decrease of 509,000 m3

decrease of 37.2 million yen

Amount of waste

decrease of 4,824 t

decrease of 104.7 million yen

7Environmental, Health, and Safety Report 2024

Environmental Impact
Reducing environmental impact by continually analyzing the impact of businessactivities on the environment
Environmental Impact

INPUT

Principal Raw Materials*1

Energy Input

1,302,647

GJ

SilicaLPG

51,151

GJ

Alumina

Fuel oil A

30,533

GJ

CarbonKerosene

3,177

GJ

Silicon carbide

Utility gas

5,668

GJ

Coal tar and tar pitch

Gas oil

161

GJ

SiliconGasoline

255

GJ

Zirconia

Steam

189

GJ

―

－

-

1,393,780

GJ

Purchased electricity

Total energy input
Water Input
Clean water, industrial
water
GroundwatertPrincipal Source Gases*1
2,073

Silicon tetrachloride

156

10,000m329

10,000m3t

Amounts of PRTR Substances Handled
Hydrogen fluoride and its
468twater-soluble salts

42

Others

Products

CoorsTek GK Group

1,737

t

Customer

Products

OUTPUT
Released into the Atmosphere

Discharge of Waste

Nitrogen oxides

2t

Total amount of waste discharged

3,919

t

Sulfur oxides
Amount of PRTR substances
released (atmosphere)

1

t

464

t

2

t

Final amount of discharge
Amount of PRTR substancestransferred35tGlobal Warming Gases

Discharged into Water

CO2 emissions (direct emissions)

5.8

kt-CO2

BOD*2＋COD*3

9t

CO2 emissions (indirect emissions)42.6

kt-CO2

SS*4

20

t

1

kt-CO2

Drainage

CO2 emissions from transport

342 10,000m3

Period: January 2023 to December 2023. Subjects: 5 business sites*1 Principal raw materials and source gases listed are those of which 100 tons or more are consumed per year.
*2 BOD: Biochemical oxygen demand*3 COD: Chemical oxygen demand*4 SS: Suspended solids

8Environmental, Health, and Safety Report 2024

Mitigation of Global Warming
Reducing
emissions
to counter global warming
MitigationCOof2Global
Warming
Reduction of CO2 emissions
The CoorsTek KG Group works to reduce◆CO２ Emissions and Specific Energy Consumption
CO2 emissions through productivity
improvements and energy conservation
measures. CO2 emissions in fiscal 2023 will decrease by
28% compared to the previous year due to factors such as a
30% increase in the proportion of renewable energy (hydropower) in purchased electricity compared to the previous
year and various energy conservation activities, although
this is due to a decrease in production volume. However, thebasic unit of energy usage (crude oil equivalent/DC) in thepast 5 years has worsened by 0.9%, largely due to thedecrease in production.

Measures to reduce CO2 emissions◆CO2 Emissions Reduction Measures and Amount of Reduction
MeasureFacility

Case 1
Reduction of power
consumption

Oguni Facility

Case 2
Reduction of power
consumption

Hadano Facility

Case 3
Reduction of power
consumption

Kariya Facility

Case 4
Reduction of power
consumption

Nagasaki Facility

Case 5
Reduction of power
consumption

CoorsTek
Tokuyama Corp.

Amount ofReduction

Details of Improvement
Annual power consumption was reduced by
1,191,377 kWh by replacing lamps and air
conditioners with those that had greater
energy savings and replacing furnace
insulations and improving the operation
control.
Annual power consumption was reduced by
218,405 kWh by replacing lamps with thosethat had greater energy savings andimproving the operation control.
Annual power consumption was reduced by
110,533 kWh by replacing lamps, airconditioners and water pumps with thosethat had greater energy savings andimproving the operation control.
Annual power consumption was reduced by
287,545 kWh by replacing lamps, chillers,
air conditioners, compressors andcentrifugal separator with those that had
greater energy savings and improving theoperation control.
Annual power consumption was reducedby 211,809 kWh by replacing lamps, airconditioners, compressors and water
pumps with those that had greater energy
savings and improving the operation
control.

550.9 t - CO2

99.8 t - CO2

49.6 t - CO2

85.1 t - CO2

93.4 t - CO2

LED lamp with motion
sensor (after)

LED lamp with motion
sensor (after)

Chiller(after)

Exhaust fan runner(after)Case 1(Oguni Facility)

Case 3(Kariya Facility)

Case 4(Nagasaki Facility)

Case 5(CoorsTek Tokuyama)

Case 2 (Hadano Facility)

Case 2 (Hadano Facility)

9 Case 2 (Hadano Facility)

Case 4 (CoorsTek
Tokuyama)

Environmental, Health, and Safety Report 2024

Waste Management
Zero emissions*1 for a recycling-based society based on the 3R concept
Initiatives to achieve zero emissions
Eachbusinesssite has a recycling center that manages waste and implements zero emission activities to help
Waste
Management
realize a recycling-based society. Activities include minimizing defects and material loss by improving
manufacturing yield and working with recycling partners for sludge and scrap waste in accordance with the 3R
principles (reduce, reuse, recycle).
The total waste discharged in relation to input in FY2023 was +11% of the previous year’s level. On the other
hand, Hadano Facility,and Kariya Facility continue the zero emissions.
*1 Zero emissions of waste: final disposal rate (final disposal amount / total waste discharged x 100) of ≦1◆Total waste discharged in relation to direct cost

◆Final disposal rate of each facility

Management of Chemical Substances“One drop control”*1 policy for managing chemical substances
Management of Chemical Substances
Chemical substance management measures
The CoorsTek GK Group promotes green procurement and responds to the EU’s RoHS*2 Directive and
REACH*3. We manage chemical substances subject to the PRTR Law and substances subject to the
Poisonous and Deleterious Substances Control Law, taking into consideration human health and safety,
prevention of pollution, and reduction of environmental impact. As we strengthen the implementation of the“one drop control,” we ensure meticulous management of data on usage, release, and transfer.
*1 “One drop control” is the Group’s practice of meticulous substance management. It involves daily cleaning andinspection so that no leakage—not even one drop of oil, chemical, or other substance—is overlooked. Structures aredesigned and maintained to ensure easy detection of any leakage. For example, trays and overflow spill basins are
kept dry.
*2 RoHS (Restriction of Hazardous Substances) Directive: European Union directive to restrict the use of lead, mercury,cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers and phthalate(DEHP,
BBP, DBP and DIBP) in electrotechnical products.
*3 REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) Regulation: European Union regulation
mandating registration, evaluation, authorization, and restriction of the use of chemical substances

10Environmental, Health, and Safety Report 2024

Pollutant release and transfer register (PRTR) substances
Among the PRTR substances handled by the CoorsTek GK, silicon carbide, which is newly covered, is themost common.

◆PRTR Results for FY 2023
Substance
numberspecified by the
PRTR Law

Substance
name

Unit: tonAmounthandledAmountreleasedTo air

To
water

To
soil

To onsite
landfills

AmounttransferredTosewage

As
waste

71

Ferric chloride

2.5

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

302

Naphthalene

5.9

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

349

Phenol

8.4

1.7

1.7

0.0

0.0

0.0

0.0

0.0

0.0

16.3

0.0

0.0

0.0

0.0

0.0

2.9

0.0

0.0

1.8

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

1.7

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

354.4

0.0

0.0

0.0

0.0

0.0

32.4

0.0 32.4

396.0

1.7

1.7

0.0

0.0

0.0

35.3

0.0 32.4

374
453
665
667

Hydrogen fluoride and its
water-soluble salts
Molybdenum and its
compounds
Cerium and its
compounds
Silicon Carbide
Total

Storage of polychlorinated biphenyls (PCBs)
The Group strictly manages equipment and machinery in storage and in use which contain PCBs until disposal
by a processing company within the period specified by governmental order, so as to not cause environmental
pollution.

◆Equipment Containing PCBs in Storage or in Use (as of December 31, 2023)
Type of Equipment Containing PCBs
(including low-concentration PCBs)

Total◆Equipment Transformers
Containing PCBs in Storage or4UseUnits(as of December 31, 2018)
Capacitors
Other equipment

3 Unit0 Units

Measures to prevent air pollution and offensive odors
The CoorsTek GK Group prevents air pollution and the release of offensive odors by installing exhaust gas
treatment equipment, fuel conversion, and other measures. Each business site has established voluntaryexhaust gas standards and works to reduce environmental impact.

Water pollution prevention
The Group has established voluntary discharged water standards at each of the sites and maintains andmanages wastewater treatment equipment and strives to prevent water pollution by monitoring wastewaterwith monitoring instruments and using automatic wastewater cut-off weirs. In addition, each business site
conducts emergency response training to enable a rapid response in the event of an emergency.

Emergency response training(Hadano Facility)

Emergency response training(Nagasaki Facility)

Emergency response training(CoorsTek Tokuyama)

Emergency Response Training(CoorsTek Nagasaki)

11
Emergency Response
Training(CoorsTek Nagasaki)

Emergency Response Training(CoorsTek Nagasaki)

Environmental, Health, and Safety Report 2024

Green Procurement
In order to create environmentally conscious products, we promote theprocurement of products, parts, materials, and raw materials with low
environmental impact (green procurement).
Green procurement
Under our Green Procurement Guidelines, we practice green procurement to make eco-friendly products. We
prioritize purchasing raw materials, parts, and supplies that reflect consideration for health, safety and theenvironment. Our efforts include eliminating hazardous substances and converting to substances with aminimal environmental impact and incorporating RoHS and REACH directives and regulations.

CoorsTek GK Group Basic Purchasing Policy
・Optimized Global Procurement
Based on fair and impartial market principles, we conduct business with suppliers who provide the best
quality, price and delivery terms, regardless of location.

・Building TrustWe create mutual benefits based on relationships of trust. We do not disclose to external parties
confidential matters that come to our knowledge in the course of business.

・Compliance
We regard compliance with the law as the basis of every transaction.

・Green Purchasing
Our procurement activities give priority to environmentally-conscious products and services.

・Conflict Minerals Policy
We do not purchase conflict minerals or materials or products that use metals derived from conflictminerals which come from the Democratic Republic of Congo or its neighboring countries, where suchminerals may serve as funding sources for militia groups that commit human rights abuses.
We kindly request that our suppliers also be transparent in their procurement of materials and parts.

12

Environmental, Health, and Safety Report 2024

History of Our Commitment to the Environment
Ever since our foundation, we have prioritized harmony with society and the environment in the
conduct of business. We intend to continually strengthen the basis of environmental managementwith the aim of ensuring sustainable management*.
※Sustainable management is defined as contributing to the realization of a sustainable society by practicing corporate

responsibility in economics, society, and the environment and by respecting people.

History of CoorsTek GK Group

Main environmental conservation
activities and commendations

Main improvements related toenvironmental conservation

1951 Oguni Facility receives the
Director-General Award for Excellent
Factories for Energy Control(Heat Category).

1954 Oguni Facility’s Akashiba
Power Plant (hydroelectric)in Oguni, Yamagata
prefecture, is completed.

1918 Toyo Taika Renga Co., Ltd.
(currently Kariya Facility) is established.
1928 Denki Kinyu Co., Ltd.
(currently Oguni Facility) is established.
1956 Kawatana Plant (currently Nagasaki
Facility) is established.
1958 Nihon Denko Co., Ltd. is renamed
Toshiba Denko Co., Ltd.
1959 Tokai Rozai Co., Ltd., is renamed
Toshiba Internal Insulation Co., Ltd.
1961 Hadano Facility is established.
1968 Toshiba Ceramics Co., Ltd.
(currently CoorsTek KK) is established
as a result of the merger between Denko
Co., Ltd. and Toshiba Rozai Co., Ltd.
1971 A research center (currently the CoreTechnology Center) is established.

1982 Tokuyama Ceramics Co., Ltd.
(currently CoorsTek Tokuyama Corp.) isestablished.
1984 Tokai Ceramics Co., Ltd. is established.

1991 Niigata Toshiba Ceramics Co., Ltd. Is
established for volume production oflarge-diameter silicon wafers.

1974 Oguni Facility receives the
Director-General Award for Excellent
Factories for Energy Control(Heat Category).
1978 Oguni Facility receives the Award of the
Minister of International Trade andIndustry for Excellent Factories forEnergy Control (Heat Category).
1984 Kariya Facility receives the President’s
Prize from the Japan Energy
Conservation Center as an example ofexcellent energy savings.
1991 Use of chlorine-based organic solvents
is abolished throughout the Group.
1997 Oguni Facility starts manufacturing
lead-free carbon brushes.
1998 Oguni Facility receives an award fromthe Director-General of the Tohoku
Bureau of Economy, Trade and Industry
for Excellent Factory Greening.
1999 Kariya Facility receives an award in the
Aichi Prefecture Factory Greening
Contest.
1999 Nagasaki Toshiba Ceramics Co., Ltd.
(currently Nagasaki Facility)
gains Eco-Mark certification for its
foamed (porous) ceramics.
2000 Green Procurement Guidelines are
established and suppliers are evaluatedfor green procurement.

13

1985 Oguni Facility introduces
waste heat-based snow
removal equipment, which
does not involve water
spraying.
1990 Oguni Facility’ s second
Akashiba Power Plant(hydroelectric) is completed.
1998 An emergency automatic
shut-off gate is introduced
at the final discharge outletof Oguni Facility.
1999 Sound barrier walls are
installed at site boundaries
of Hadano Facility.

2000 Removal of incineratorsfrom all production sites iscompleted.
2001 Heat storage exhaust gas
treatment equipment isinstalled at Kariya Facility
to control offensive odors
and VOCs.
2004 Measuring equipment for
total phosphorus and total
nitrogen is installed at
Kariya Facility.
2004 Introduction of central
monitoring systems at final
discharge outlets iscompleted at Oguni, Hadanoand Kariya Facilities.
2004 Currently Nagasaki Facilitychanges furnace fuel fromheavy oil to kerosene in orderto reduce SOx.

Environmental, Health, and Safety Report 2024

History of CoorsTek GK Group

2006 SIC Investment, a special purpose
corporation for the tender offer ofToshiba Ceramics' shares, isestablished. Toshiba Ceramics
becomes a subsidiary of SIC
investment following completion of thetender offer.
2007 Toshiba Ceramics Co., Ltd. becomes awholly owned subsidiary of SIC
Investment following completion of theshare exchange.
SIC Investment is renamed Covalent
Materials Corp.
Toshiba Ceramics merges with Covalent
Materials Corp. and the new Company,
Covalent Materials Corp., isinaugurated.

Main environmental conservation
activities and commendations
2005 Oguni Facility receives the Minister of
Economy, Trade and Industry Award for
Excellent Factories for Energy Control(Heat Category).

2006 Kariya Facility holds an explanatory
meeting for local residents about soil
and groundwater contamination.
2006 Onsite soil and groundwater measures
are completed at Kariya Facility.
2007 Hadano Facility achieves zero
emissions of waste.
2007 Cleanup of contaminated soil at Kariya
Facility starts.
2008 Hadano Facility is awarded the Shonan
Region Prefectural Administration
Center Director’s Award for its efforts in
waste reduction, reuse, and recycling
activities.

2012 Silicon wafer business is transferred to
Sino-American Silicon Products.
2013 Shares of Tokai Ceramics Co., Ltd.
are transferred to Calderys Japan Co.,Ltd.
Shares of Covalent Sales Corp. aretransferred to Hibino Corp.

2014 CoorsTek, Inc. acquires the shares of
Covalent Materials Corp.

2005 Kariya Facility installs
catalyst combustion typeodor control equipment infurnaces at advanced
ceramics factories 1, 2 and 3.
2005 CoorsTek Nagasaki(currently Nagasaki Facility)changes furnace fuel fromkerosene to LPG in order toreduce CO2 emissions.
2006 Hadano Facility changes
boiler fuel from heavy oil to
LPG in order to reduce
CO2 emissions.
2007 Kariya Facility installs
catalyst combustion typeodor control equipment in
the furnace.
2008 Kariya Facility introduces
an extra high voltage
substation, eliminating theuse of heavy oil.
2008 Tunnel kiln fuel isconverted from kerosene to
LPG to reduce CO2
emissions at Covalent
Materials Nagasaki Corp.
(currently Nagasaki Facility).

2009 Cleanup of PCB-contaminated soil at
Kariya Facility is completed.
2010 Akashiba Power Plant is transferred to
F-Power Co., Ltd.

Main improvements related toenvironmental conservation2012 Electronic manifest system for industrial
waste management begins at Hadano
Facility.

2008 Kariya Facility’s status as a
specified air pollutant
discharging plant isremoved due to a shift inbusiness structure andenergy conversion.

2013 Oguni Facility enters the Yamagata Eco
Smile Contest, resulting in one 2nd
place winner and three special prize
winners.
2013 Removal of all PCB equipment by adisposal company is completed by
Covalent Materials Tokuyama Corp.
(currently CoorsTek Tokuyama Corp.).
2014 Removal of all PCB equipment by adisposal company is completed by
Covalent Materials Nagasaki Corp.
(currently Nagasaki Facility.)
2014 Zero emissions status is achieved forthe first time at Oguni Facility in FY
2013.

2015 The Company is renamed CoorsTek KK.

2015 Electronic manifest system for industrial
waste management begins at Oguni
Facility.
2015 195 units of PCB equipment and 13.8
tons of pollutant by a disposal company
are removed at Oguni, Hadano andKariya Facilities.
2015 Kariya Facility receives recognition fromthe city of Kariya as an eco-friendly worksite (Kariya eco-friendly workplace) for its
efforts in consideration of theenvironment during the course ofbusiness.

2018 Kariya Facility 100th Anniversary

2019 Electronic manifest system for industrial
waste management begins at Kariya
Facility and CoorsTek
Nagasaki(currently Nagasaki Facility).
2020 Completed delivery of all PCB equipment
to processing contractors(Hadano Facility)
14

2015 Three wastewater
treatment facilities areconsolidated into one at
Oguni facility.

2017 Kariya Facility installs
catalyst combustion typeodor control equipment in
its furnace.

Environmental, Health, and Safety Report 2024

History of CoorsTek GK Group

Main environmental conservation
activities and commendations

Main improvements related toenvironmental conservation

2021 Completed delivery of all PCB
equipment to processing contractors(Kariya Facility)

2021 Hydrofluoric acid wastewater
treatment facility, Renewal of
settling tank and introductionof automatic slaked lime
injection system .
(Hadano Facility)

2022 The high-purity quartz glass crucible
business (including Quartz powder) istransferred to Momentive Technologies .
2022 CoorsTek Nagasaki Corporation haschanged its name to CoorsTek KK
Nagasaki Facility

2023 Reduced BOD ofwastewater throughscrubber modification(Hadano Facility)

2024 CoorsTek KK has converted its corporate
structure from a stock company to alimited liability company. In conjunction
with this, CoorsTek Sales KK, whichhandles the domestic sales function, hasbeen merged into CoorsTek GK and its
functions have been integrated.

15

Environmental, Health, and Safety Report 2024

Health and Safety Report

Safety and Health Report
Occupational Safety and Health Management Structure
Occupational safety and health management structure
In order to oversee and promote Safety
and Health management, we haveappointed the Chief Safety and HealthManagement Officer and the Group
Safety and Health Manager within thegroup and have appointed the Site Safety
and Health Manager at eachmanufacturing site.
We perform risk reduction activities that
conform to the Ministry of Health, Labourand Welfare’s Guidelines on Occupational
Safety and Health Management Systems.

◆Occupational Safety and Health Management Structure

Occupational Accidents
Occupational accidents
In FY 2023, there were two occupational accidents in the CoorsTek GK Group. This is the least number ofoccupational accidents in the last five years. Additionally, there were no accidents resulting in lost time for the
first time in two years. When looking at the causes of occupational accidents, both two cases of occupational
accidents include human error as one of the factors. Following the human performance training for managers
and supervisors conducted in FY 2022, human performance training for general employees was conducted forall employees in FY 2023. We will continue to provide safety training for workers and strive to eliminate allaccidents through initiatives such as using protective guards on machines, improving risk levels of safety andmaintenance devices, Foresight 4 Safety (“kiken yochi,” or hazard prediction) - the point-and-call risk reduction
system, and policies for risk reduction. In FY2023, three facilities, Oguni Facility, Nagasaki Facility andCoorsTek Tokuyama, achieved zero occupational accidents and achieved no accidents for twelve consecutive
years.

◆Occupational Accidents in the CoorsTek Group◆Total Case Injury Rate*2◆Incidence Rate*1

16

Environmental, Health, and Safety Report 2024

Note: Figures other than CoorsTek GK Group are based on statistics from the Ministry of Health, Labour and Welfare on occupational accidents.

*1 Incidence rate: Number of accidents involving one or more lost workdays per million work hours*2 Total Case Injury Rate: Number of total accidents per 200-thousand work hours

Objectives and Results of Occupational Safety and Health Activities
Objectives of occupational safety and health
The CoorsTek GK Group accords the highest priority to human life. To ensure workplace safety and tosafeguard the health of employees and other concerned parties, we have established the Basic Policy on
Safety and Health Management in which we maintain safe, comfortable workplaces. We work to prevent
occupational accidents and illnesses and encourage employees to maintain their health.

◆FY 2023 Priorities and Results
FY 2023 Priorities

1.Initiatives to eliminate
occupational accidents

Objectives(1) Improve Human Performance
・Human performance education
・Establishment of Foresight 4 Safety(2) Promote risk reduction
・Implementation of risk assessment andrisk improvement
・Improvement of risk level *1 (safety,
chemical substances) II, III by 5% or more
・RA implementation using unified RA
evaluation criteria
・Implementation of GEMBA WALKS
・Safety Alert Review (investigation ofsimilar risks for disasters and criticalinfrastructure, horizontal deployment ofcorrections)(3) Others
・Introduction of ergonomics*2 work
evaluation system(1) COVID-19

2. Physical and mental
health maintenanceand improvement(2) Promote awareness of the importanceof improving medical checkup results(awareness activities about irregularity
rates above the national average)(3) Improvement and enhancement of
mental health environment

Performance･Conducted humanperformance education
for all employees.
・Conducted at least oncea week at each facility,
342 times in total
・Level II,Ⅲ:6%
improvement
・Nagasaki
Facility75% ,Others100％
・GEMBA WALKS
10cases・Safety Alert Review
59cases・Introduced a work
evaluation system andcompleted training for
EHS personnel at eachfacility.
･From 5/8 onwards, themanagement has beenchanged due to thetransition from category 2
equivalent to category 5.
･Education by industrial
physicians andoccupational healthconsultants･Systematicallyconducted

Evaluation*3

〇

◎

〇

〇

〇
〇

*1 Risk Level II: Risk requiring systematic reduction measures，Level III: Risk requiring prioritized reduction measures*2 Ergonomics: Optimizing machine design and work methods to reduce physical burden and prevent illness.
*3 ◎ Objective exceeded ○ Objective achieved △ Objective not achieved◆FY 2024 Priorities
1. Initiatives to eliminate occupational accidents(1) Improve Human Performance(2) Others

2. Physical and mental health maintenanceand improvement(1) Awareness of the importance ofimproving medical checkup results(2) Improvement and enhancement of
mental health environment

17

Environmental, Health, and Safety Report 2024

Occupational Safety and Health Management
Raising awareness of safety and healthEvery year, at each workplace, we are working to raise health and safety awareness by Foresight 4 Safetyand during National Safety Week and National Occupational Safety and Health Week, all employees, including
those of affiliated companies and cooperating companies, attend safety meetings, lectures, and award
ceremonies to raise awareness of safety and health.
In 2023, Message transmission, health and safety commendations, awareness-raising activities, etc. during
National Safety Week were held using a remote system, taking measures to prevent infection due to the
influence of COVID-19.

Live delivery of awards ceremonies andPlant Manager messages at National
Safety Week events to each workplace(Oguni Facility)

Live delivery of awards ceremonies andPlant Manager messages at National
Safety Week events to each workplace(Hadano Facility)

Safety Meeting at National Safety Week
events to each workplace(Nagasaki Facility)

Occupational safety and health education and training
The Group conducts education programs related to safety and health based on an annual occupational safety
and health education and training plan. We work to ensure employees’ safety and raise safety and healthawareness.

Area Sensor Training(Oguni Facility)

Health Training(Hadano Facility)

Health and Safety Training(Nagasaki Facility)

Hands-on safety training
We consider raising each employee’s risk awareness important for eliminating occupational accidents and we
provide accident simulation training to enable employees to recognize the risks inherent in their work throughpersonal experience.

Risk of caught in machine(Oguni Facility)

Risk of caught in machine(Hadano Facility)

18

Risk of caught in machine(Kariya Facility)

Environmental, Health, and Safety Report 2024

Implementation of complete lock out , tag out, and try out
Lock Out/Tag Out/Try Out* is a critical procedure for protecting employees who inspect, clean, or maintainmachinery or equipment from dangers due to malfunction or incorrect use of the machinery.
*Lock Out: To shut off the source of energy (power) supplied to the machine or device, lock the starting device, and prevent othersfrom operating the machine.
*Tag Out: The use of tags to prohibit the operation of machinery shut off or equipment during shutdown of the energy source ofthe machinery.
*Try Out: Confirm that mechanical equipment does not move by checking residual energy and turning on the start switch (testing).

Activities of risk reduction
Installation of Machine Guarding
All CoorsTek GK Group is working on the installation of machine guarding * based on the Group Safety and
Health Guidelines. For newly installed equipment, safety is evaluated by pre-installation safety, health andenvironment environmental evaluation and equipment design review, and for existing equipment, machine
guarding had been systematically installed based on the evaluation results of risk assessment. In FY2022, wehave completed improvements to initial machine guard failures at all facilities and CoorsTek Tokuyama. We
will continue to improve our machine guards based on regular risk assessments, Foresight 4 Safety, near-missinformation, and other risk reduction activities.
* Machine Guarding: Doors, fences, automatic machine stop function, etc. to prevent workers from touching the hazards of the machine.

Ergonomics improvement
All CoorsTek GK Group is working on planned improvements based on the evaluation results of Ergonomics
with the aim of reducing the workload of employees.

BeforeBefore

After

After

Improved the work of pulling out heavy objects:
Adding a handle eliminates the need to work while sitting on your back(Hadano Facility)

Improved heavy lifting work methods:
Installed Vacuum suction type material handling(Oguni Facility)

Risk assessment of workplaces for pregnant women
In order to assess whether there are any operations that are burdensome for pregnant women, CoorsTek GK
group categorizes the work environment, work posture, and work restrictions, and conducts risk assessments
for each item, and strives to ensure that safety and health are maintained based on the evaluation results.

Employee health
Physical health management
To create workplaces conducive to employee health, the CoorsTek GK Group mandates medical checkups
and provides opportunities for health management and counseling about all aspects of health based on the
medical checkup results. As a measure to prevent health problems due to overwork, we address the healthproblems of individual employees by offering consultations with industrial physicians, which can also be
arranged based on employee requests. Furthermore, the number of elderly employees at the Oguni Facility
has been increasing in recent years due to the promotion of employment of older employees. We believe that
it is necessary to check the health status of older employees in order to work in a healthy and safe manner, so
we conducted a physical fitness check on selected employees aged 50 and over to prevent falls. In the future,
we plan to roll this out to the entire facility.

19

Environmental, Health, and Safety Report 2024

The physical fitness checkof elderly employees(Oguni Facility)

Mental health
The Group provides preventive training for managers to promote early-stage awareness of persons who
might have mental health problems and ensure that they are not overlooked, and provides education to enable
employees to recognize any change in their mental health. We provide care for employees by assigningcounselors and instituting return-to-work support programs for employees who have taken leave due to mental
health problems so they can smoothly return to work.

20

Environmental, Health, and Safety Report 2024

Local Community Relations
Responsibility to Local Communities
Earning the community’s trust by promoting good corporate citizenship
Disaster preparedness■Disaster preparedness activities
To be prepared for a fire emergency or major earthquake, we periodically hold disaster preparedness drills toensure a rapid and appropriate emergency response and to minimize damage.

Disaster preparedness drill(Oguni Facility)

Night evacuation drill(Hadano Facility)

Relief drill(Kariya Facility)

Evacuation drill(CoorsTek Tokuyama)Partnership with Local Communities
The CoorsTek GK Group cooperates and forms partnerships with local communities. We fulfill our responsibility
as a member of the community and work to expand opportunities for communication.
The Company provides the Wide Plan Leave System to support employees’ volunteer activities. Under thissystem, employees can use their paid holidays that would otherwise expire and apply them to volunteer
activities that make a social contribution.

Excerpt from the CoorsTek GK Group Standards of Conduct

Coors-Tech
Co., Ltd. Group Code of Conduct (exceCommunity
relations
We maintain good relations with local communities through cooperation and partnerships and fulfill our
responsibility as a member of the community.

Corporate citizenship activities■Science class and Community-based lessons with high school
For employees’ family members and students, we offer factory tours and opportunities to learn throughexperience at our workplaces. With the theme of "labor and health" with high school in the Oguni district, we
also conducted regional cooperation classes using remote control. Every year, we hold science lectures inpartnership with the local government with the aim of nurturing a well-rounded education for children.

Science lectures(Oguni Facility)

Community-based lessons with high school(Oguni Facility)

21

Environmental, Health, and Safety Report 2024

■Volunteer activities
The Group cooperates closely with local residents to build better communities. Each business site conducts
periodic clean-ups in the surrounding area, holds blood donor drives, and promotes traffic safety activities.

Beautification activities(Kariya Facility)

Beautification activities(Nagasaki Facility)

Forest maintenance activities for water source(CoorsTek Tokuyama)■OtherAt our company, we carry out blood donation activities for employees and others every year within the facilities
and cooperate with the Japanese Red Cross Blood Center in order to resolve the current blood shortage.

Blood donation activity（Hadano Facility）

Blood donation activity（Kariya Facility）

22

Environmental, Health, and Safety Report 2024

CoorsTek GK

Published in April 2024

■ Communications
Osaki Wiz Tower, 11-1, Osaki 2-chome, Shinagawa-ku, Tokyo 141-0032, Japan
Tel: +81-3-5437-8411

Fax: +81-3-5437-7172

URL : https://www.coorstek.co.jp/eng_index.html
For any comments or inquiries concerning this report or our EHS activities, please contact us.

23