Taseko Mines : 2024 Sustainability Summary Table

Published: 2025-06-23 17:37:05 ET TKO.TO

Published on 06/23/2025 at 17:37

2024 Sustainability Report Message from The CEO Our Company

Sustainability

Critical Minerals

Operational Excellence 360° of Value Governance Performance

In this Section

2024 Sustainability Accounting Standards Board (SASB) Index: Gibraltar Mine

Taseko Values Metrics

‌Susľei3ebiliľv Pxrforme3cx‌

Gibraltar Mine mill central monitoring station 1

S6SB Topic

6ccou3ľi3g Meľric

S6SB Code

Deľe - Gibrelľer Mi3e

Greenhouse Gas Emissions

(1) Gross global Scope 1 emissions, (2) Percentage covered under emissions limiting regulations

EM-MM-110a.1

(1) 2.27 t CO2e/t CuEq - Scope 1

(2) 100%

Discussion of long-term and short-term strategy or plan to manage Scope 1 emissions, emissions reduction targets, and an analysis of performance against those targets

EM-MM-110a.2

Management of Scope 1 emissions are driven by Gibraltar's 'Energy Management Policy,' which integrates energy management programs and practices across all site-wide operations and projects with the goal of achieving continuous improvement in energy efficiency. Through this focus on continuous improvement in energy efficiency, Gibraltar also seeks ongoing improvements in its GHG intensity per unit of production. Taseko is advancing the Florence Copper Project into commercial production. As an 'in-situ copper recovery' project, Florence Copper is expected to be the lowest GHG and energy intensity primary copper producer in North America, lowering Taseko's enterprise-wide GHG intensity per unit of production.

Air Quality

Air emissions of the following pollutants: (1) CO, (2) NOx (excluding N2O), (3) SOx, (4) Particulate matter (PM10), (5) Mercury (Hg), (6) Lead (Pb), and (7) Volatile organic compounds (VOCs)

EM-MM-120a.1

(1) 1,799 (2) 27 (3) 32 (4) 1,799 (5) 0.0002 (6) 0.012 (7) 3.5

Energy Management

(1) Total energy consumed, (2) Percentage energy from grid electricity,

(3) Percentage energy consumed from renewable energy sources

EM-MM-130a.1

(1) 3,302,643 GJ (2) 47% (3) 47%

Water Management

(1) Total fresh water withdrawn (from aquifer) (2) Total fresh water consumed* Percentage of each in regions with High or Extremely High Baseline Water Stress (3) Increase in water stored on-site

EM-MM-140a.1

(1) 164 thousand cubic metres; 0% (2) 470 thousand cubic metres*; 0% * Includes water withdrawn and precipitation (contact water) stored on-site

(3) -1,129 thousand cubic metres

Number of incidents of non-compliance associated with water

quality permits, standards, and regulations

EM-MM-140a.2

One minor incident occurred in 2024. The incident was short in nature, promptly reported, immediately corrected and not expected to have any lasting effect on aquatic habitat or aquatic life in the Fraser River.

On Monday November 4, 2024 discharge to the Fraser River from the TSF recorded elevated Total Suspended Solids concentrations. Immediate remedial action included re-analysis of the sample, and suspension of the discharge to the Fraser River. The cause was due to elevated TSS near the Tailings Storage Facility (TSF) barge, as a result of reduced water volumes within the TSF in combination with the influence of fall turnover.

Waste and

Total weight of non-mineral waste generated

EM-MM-150a.4

See page 24

Hazardous Materials Management

Total weight of tailings produced EM-MM-150a.5 29,226,549 metric tons

Total weight of waste rock generated EM-MM-150a.6 80,376,223 metric tons

Description of waste and hazardous materials management policies and procedures for active and inactive operations

EM-MM-150a.10 See page 24

Total weight of hazardous waste generated EM-MM-150a.7 See page 24

Total weight of hazardous waste recycled EM-MM-150a.8 See page 24

Biodiversity Impacts

Number of significant incidents associated with hazardous

materials and waste management

Description of environmental management policies and practices for active sites

Percentage of mine site where acid rock drainage is: (1) predicted to occur, (2) actively mitigated, and (3) under treatment or remediation

Percentage of (1) proven and (2) probable reserves in or near sites with protected conservation status or endangered species habitat

EM-MM-150a.9 Zero. Taseko's definition of a significant incident is one that reports beyond the mine site boundary and requires activation of emergency response to

control, mitigate and clean up.

EM-MM160a.1 See page 30

EM-MM160a.2 (1) 25% (2) 25% (3) 25%

EM-MM160a.3 (1) 0% (2) 0%

S6SB Topic

6ccou3ľi3g Meľric

S6SB Code

Deľe - Gibrelľer Mi3e

Security, Human Rights

Percentage of (1) proven and (2) probable reserves in or near areas

of conflict

EM-MM210a.1 (1) 0% (2) 0%

and Rights of Indigenous

Peoples

Percentage of (1) proved and (2) probable reserves in or near EM-MM210a.2 (1) 100% (2) 100% Indigenous land

Discussion of engagement processes and due diligence practices

EM-MM210a.3

See page 44 - 45

with respect to human rights, Indigenous rights, and operation in

areas of conflict

Community

Discussion of process to manage risks and opportunities

EM-MM210b.1

See page 37 - 38

Relations

associated with community rights and interests

Number and duration of non-technical delays

EM-MM210b.2

1, 18 days

Labour

Percentage of active workforce covered under collective bargaining

EM-MM310a.1

Canadian: 75%

Relations

agreements, broken down by U.S. and foreign employees

US: 0%

Number and duration of strikes and lockouts

EM-MM310a.2

Workforce

(1) MSHA all-incidence rate, (2) fatality rate, (3) near miss frequency

EM-MM320a.1

a) Employees: (1) Not tracked (2) 0 (3) Not tracked (4) Training hours specific to health, safety and emergency management not tracked.

Health and

rate (NMFR), (4) average hours of health, safety, and emergency

b) Contract Employees: (1) to (4): Not available

Safety

response training for (a) full-time employees and (b) contract

employees

Business

Management system for prevention of corruption and bribery

EM-MM510a.1

See page 49

Ethics and

throughout the value chain

Transparency

Production in countries that have the 20 lowest rankings in

EM-MM510a.2

Zero. Taseko operations in Canada and the United States.

Transparency International's Corruption Perception Index

Tailings

Tailings storage facility inventory table: (1) facility name, (2)

EM-MM540a.1

See page 23

Storage

location, (3) ownership status, (4) operational status, (5)

Facilities

construction method, (6) maximum permitted storage capacity, (7)

Management

current amount of tailings stored, (8) consequence classification,

(9) date of most recent independent technical review, (10) material

findings, (11) mitigation measures, (12) site-specific EPRP

Summary of tailings management systems and governance

EM-MM540a.2

See page 22 - 24

structure used to monitor and maintain the stability of tailings

storage facilities

Activity

Production of (1) metal ores and (2) finished metal products

EM-MM000.A

(1) Copper: 106 million pounds; Molybdenum: 1.4 million pounds (2) 0

Metrics

(1) Total number of employees (2) Percentage contractors EM-MM000.B (1) 838 employees (2) Not available

S6SB Topic

6ccou3ľi3g Meľric

S6SB Code

Deľe - Gibrelľer Mi3e

Workforce Health and Safety

(1) MSHA all-incidence rate, (2) fatality rate, (3) near miss frequency rate (NMFR), (4) average hours of health, safety, and emergency response training for (a) full-time employees and (b) contract employees

EM-MM320a.1

Employees: (1) Not tracked(2) 0 (3) Not tracked (4) Training hours specific to health, safety and emergency management not tracked.

Contract Employees: (1) to (4): Not available

Business

Management system for prevention of corruption and bribery

EM-MM510a.1

See page 49

Ethics and

throughout the value chain

Transparency

Production in countries that have the 20 lowest rankings in

EM-MM510a.2

Zero. Taseko operations in Canada and the United States.

Transparency International's Corruption Perception Index

Tailings

Tailings storage facility inventory table: (1) facility name, (2)

EM-MM540a.1

See page 23

Storage

location, (3) ownership status, (4) operational status, (5)

Facilities

construction method, (6) maximum permitted storage capacity, (7)

Management

current amount of tailings stored, (8) consequence classification,

(9) date of most recent independent technical review, (10) material

findings, (11) mitigation measures, (12) site-specific EPRP

Summary of tailings management systems and governance

EM-MM540a.2

See page 22 - 24

structure used to monitor and maintain the stability of tailings

storage facilities

Activity

Production of (1) metal ores and (2) finished metal products

EM-MM000.A

(1) Copper: 106 million pounds; Molybdenum: 1.4 million pounds (2) 0

Metrics

(1) Total number of employees (2) Percentage contractors EM-MM000.B (1) 838 employees (2) Not available

Sociel: Our People

Head Office Vancouver

Gibrelľer Mi3e

Ïlore3ce Copper

Yellowheed

Commitment to Our

Total # Employees

728

% of Female Employees

34%

13%

20%

100%

% of Female New Hires

25%

23%

15%

100%

% of Indigenous Employees

Not Tracked

13%

Not Tracked

50%

% of Indigenous New Hires

Not Tracked

17%

Not Tracked

Retention Rate - Total

93%

92%

67%

100%

Retention Rate - Females

90%

89%

75%

100%

% of Employees under 35

10%

27%

30%

50%

Average Length of Employment (years)

6.24

8.41

2.07

0.75

% of Workforce under Collective Bargaining Agreement

75%

Number and Duration of Strikes

1,18 days

Health and Safety

Annual Investment in Training

Not Tracked

$707,000

Not Tracked

Total Hours Training

Not Tracked

48,507

Not Tracked

Commitment to Our

% of Local Employees

Not Applicable

96%

70%

Not Available

$ Wages Distributed Locally

Not Applicable

$82,690,000

USD$6,400,000

Not Available

% of Wages Distributed Locally

Not Applicable

96%

83%

Not Available

$ Procurement Distributed Locally

Not Applicable

$196,200,200

USD$30,248,000

Not Available

% of Procurement Distributed Locally

Not Applicable

42%

18%

Not Available

% of Employees Recruited Locally

Not Applicable

85%

65%

Not Available

Community Engagement

Site Tours

Not Applicable

Community / Industry Meetings, Presentations, and Events

Career Fairs / Educational Events

Community Investment

2024 Community Investment and Sponsorships

$144,613

$117,643

USD$192,164

$7,300

Total Community Investment and Sponsorships 1

$5,025,636

$2,264,591

USD$483,501

$13,079

2024 Scholarships / Bursaries Granted

Via Taseko's Program

Total Scholarships / Bursaries Granted

Via Taseko's Program

Workforce

Note: All currency amounts are stated in Canadian dollars except where otherwise noted.

Disclaimer

Taseko Mines Limited published this content on June 23, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on June 23, 2025 at 21:36 UTC.