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TKO.TO ·

Taseko Reports $62 Million of Cash Flow from Operations IN the Second Quarter 2017

Corporate Updates

*Non-GAAP performance measure. See end of news release.

TASEKO REPORTS $62 MILLION OF CASH FLOW FROM OPERATIONS

IN THE SECOND QUARTER 2017

This release should be read with the Company’s Financial Statements and Management Discussion & Analysis

("MD&A"), available at www.tasekomines.com and filed on www.sedar.com. Except where otherwise noted, all

currency amounts are stated in Canadian dollars. Taseko’s 75% owned Gibraltar Mine is located north of the City

of Williams Lake in south-central British Columbia. Production volumes stated in this release are on a 100% basis

unless otherwise indicated.

August 2, 2017, Vancouver, BC – Taseko Mines Limited (TSX: TKO; NYSE American: TGB) ("Taseko" or the

"Company") reports cash flow from operations of $62.3 million in the second quarter of 2017, earnings from mining

operations before depletion and amortization* of $46.5 million and adjusted EBITDA* of $42.8 million.

Russell Hallbauer, President & CEO commented, “In the first half of 2017 we built on the successes realized in the

fourth quarter of 2016, and capitalized on rising copper prices. Over the past nine months we have generated $192

million of cash flow from operations and $147 million in earnings from mining operations before depletion and

amortization. Over the same period, site spending has been consistent and in the second quarter site operating costs,

net of by-products was US$0.97 per pound with C1* costs of US$1.31 per pound.”

“During the second quarter we completed a US$250 million debt offering. We used the proceeds from this offering,

along with a portion of our cash balance, to repay approximately US$275 million of debt which was due in 2019.

We felt it was important to take advantage of a healthy bond market to reduce our overall debt and extend the due

date to 2022,” continued Mr. Hallbauer.

Mr. Hallbauer added, “ With the copper price recently increasing to two -year highs, combined with nearly $100

million of cash on hand plus our long-term debt reduced and termed out five years, we are in a very good position

to continue investing in and advancing our pipeline of projects.”

“For the past four weeks, uncontrolled wildfires resulted in evacuation orders for a number of communities in the

Cariboo where most of our Gibraltar employees reside. These evacuation orders have affected the complement of

personnel who operate Gibraltar, and access to and from the mine was also significantly curtailed during this period.

This has resulted in reduced production for periods of time as well as a complete mine shutdown for several days

during July. Mining and milling operations are beginning to return to normal as some evacuation orders have been

lifted over the past week. Third quarter copper sales volumes are expected to be up to 10% lower than the second

quarter of 2017. The situation continues to evolve and we are hopeful that the worst is be hind us,” concluded Mr.

Hallbauer.

. *Non-GAAP performance measure. See end of news release.

Second Quarter Highlights

• Earnings from mining operations before depletion and amortization* were $46.5 million;

• Cashflow from operations was $62.3 million for the second quarter;

• Adjusted net income* for the quarter was $14.3 million (or $0.06 per share) and net income was $5.2 million

(or $0.02 per share);

• Site operating costs, net of by- product credits* were US$0.97 per pound produced, down 44% from the

second quarter of 2016;

• The Gibraltar Mine produced 39.4 million pounds of copper and 0.8 million pounds of molybdenum (100%

basis) at a total operating cost (C1)* of US$1.31 per pound;

• Total sales for the second quarter were 40.7 million pounds of copper and 0.8 million pounds of

molybdenum;

• On April 12, 2017, the Company announced that a new long-term agreement was ratified by its unionized

employees at Gibraltar. The new agreement will be effective through May 31, 2021;

• On June 14, 2017, the Company completed an offering of US$250 million aggregate principal amount of

8.75% senior secured notes due 2022. The Company used the net proceeds of the offering and $72 million

of its existing cash balance, to fund the redemption of its US$200 million senior notes due 2019 and to

repay its senior secured credit facility (due March 2019) and the related copper call option;

• Long-term debt and other financial liabilities have been reduced by $63 million during the first six months

of 2017, and the maturity date of long-term debt has been extended from 2019 to 2022; and

• The Company’s cash balance at June 30, 2017 was $97 million, which was after the $72 million used for

the debt refinancing.

Subsequent Events

• On July 18, 2017, the Company received approval from the Province of British Columbia to undertake a

site investigation program to conduct exploratory work at the New Prosperity Gold- Copper project site.

The Notice of Work (“NOW”), which is a multi-year permit, will allow the Company to gather information

for the purpose of advancing mine permitting under the British Columbia Mines Act; and

• For the past four weeks, uncontrolled wildfires resulted in evacuation orders for a number of communities

in the Cariboo where most of our Gibraltar employees reside. These evacuation orders have affected the

complement of personnel who operate Gibraltar, and access to and from the mine was also significantly

curtailed during this period. This has resulted in reduced p roduction for periods of time as well as a

complete mine shutdown for several days during July. Mining and milling operations are beginning to

return to normal as some evacuation orders have been lifted over the past week. Third quarter copper sales

volumes are expected to be up to 10% lower than the second quarter of 2017.

. *Non-GAAP performance measure. See end of news release.

HIGHLIGHTS

Financial Data Three months ended June 30, Six months ended June 30,

(Cdn$ in thousands, except for per share amounts) 2017 2016 Change 2017 2016 Change

Revenues 99,994 55,090 44,904 204,383 113,273 91,110

Earnings (loss) from mining operations before depletion

and amortization* 46,460 (3,164) 49,624 99,887 (3,468) 103,355

Earnings (loss) from mining operations 34,661 (17,302) 51,963 78,511 (31,116) 109,627

Net income (loss) 5,247 (19,384) 24,631 21,726 (20,899) 42,625

Per share - basic (“EPS”) 0.02 (0.09) 0.11 0.10 (0.09) 0.19

Adjusted net income (loss)*

14,305 (19,758) 34,063 29,560 (37,841) 67,401

Per share - basic (“adjusted EPS”)* 0.06 (0.09) 0.15 0.13 (0.17) 0.30

EBITDA* 43,805 (7,858) 51,663 92,950 3,144 89,806

Adjusted EBITDA* 42,820 (7,642) 50,462 90,754 (12,134) 102,888

Cash flows provided by (used for) operations 62,291 (4,211) 66,502 142,056 (8,317) 150,373

Operating Data (Gibraltar - 100% basis) Three months ended June 30, Six months ended June 30,

2017 2016 Change 2017 2016 Change

Tons mined (millions) 21.1 26.2 (5.1) 42.9 47.7 (4.8)

Tons milled (millions) 7.5 7.2 0.3 14.8 14.7 0.1

Production (million pounds Cu) 39.4 30.6 8.8 80.6 59.5 21.1

Sales (million pounds Cu) 40.7 30.3 10.4 81.5 60.8 20.7

. *Non-GAAP performance measure. See end of news release.

REVIEW OF OPERATIONS

Gibraltar Mine (75% Owned)

Operating data (100% basis) Q2 2017 Q1 2017 Q4 2016 Q3 2016 Q2 2016

Tons mined (millions) 21.1 21.8 18.5 21.5 26.2

Tons milled (millions) 7.5 7.3 7.3 7.4 7.2

Strip ratio 2.8 2.4 1.1 1.0 2.4

Site operating cost per ton milled (CAD$) $7.67 $8.59 $9.13 $9.47 $9.67

Copper concentrate

Grade (%) 0.309 0.328 0.319 0.259 0.252

Recovery (%) 85.2 85.9 87.0 85.9 84.1

Production (million pounds Cu) 39.4 41.3 40.7 33.1 30.6

Sales (million pounds Cu) 40.7 40.8 40.4 29.8 30.3

Inventory (million pounds Cu) 4.6 5.9 5.6 5.4 2.1

Molybdenum concentrate

Production (thousand pounds Mo) 789 866 764 185 -

Sales (thousand pounds Mo) 794 859 798 105 -

Per unit data (US$ per pound produced)*

Site operating costs* $1.08 $1.15 $1.23 $1.64 $1.77

By-product credits* (0.11) (0.15) (0.11) (0.06) (0.03)

Site operating costs, net of by-product credits* $0.97 $1.00 $1.12 $1.58 $1.74

Off-property costs 0.34 0.33 0.36 0.31 0.33

Total operating costs (C1)* $1.31 $1.33 $1.48 $1.89 $2.07

OPERATIONS ANALYSIS

Second quarter results

Copper head grade at Gibraltar was 0.309% in the second quarter. Copper recovery for the quarter was 85% and was negatively

impacted due to periodic occurrences of oxidized ore. Combined with strong mill throughput of 7.5 million tons of ore, the

mine produced 39.4 million pounds of copper.

A total of 21.1 million tons were mined during the quarte r at a strip ratio of 2.8 to 1. Waste stripping costs of $18.2 million

(75% basis) were capitalized in the quarter primarily related to the Granite pit. During t he quarter, approximately 1.9 million

ore tons milled was drawn from the ore stockpile as planned. Site operating cost per ton milled* was $7.67 in the second quarter

of 2017, which is lower than recent quarters due to the increased capitalization of stripping costs.

Site operating costs per pound produced* decreased to US$1.08 in the second quarter of 2017 from US$1.15 in the first quarter

of 2017.

The molybdenum circuit continued to operate at design capacity in the period. A total of 0.8 million pounds of molybdenum

were produced, with recoveries averaging 48%.

. *Non-GAAP performance measure. See end of news release.

OPERATIONS ANALYSIS - CONTINUED

By-product credits per pound produced* decreased to US$0.11 in the second quarter of 2017 from US$0.15 in the first quarter

of 2017. The decrease was a result of negative provisional price adjustments for molybdenum and lower molybdenum sales

volume in the second quarter.

Off-property costs per pound produced* were US$0.34 for the second quarter of 2017, which is consistent with recent periods.

Total operating costs (C1) per pound* decreased to US$1.31, a 67% reduction from the second quarter of 2016 due to increased

copper production, higher molybdenum by -product credits due to the restart of the moly circuit in September 2016, and

increased capitalized stripping costs in the current period.

GIBRALTAR OUTLOOK

Overall, Gibraltar has maintained a stable level of operations and management continues to focus on further improvements to

operating practices to reduce unit costs. Copper prices have continued to st rengthen in the third quarter of 2017, increasing to

US$2.86 per pound as of August 1, 2017, which is 11% higher than the average LME copper price during the second quarter.

A weak Canadian dollar contributes to improved operating margins at Gibraltar as approximately 80% of mine operating costs

are paid in Canadian dollars. The Canadian dollar strengthened by approximately 2% during the second quarter of 2017, and

has strengthened by a further 3% since June 30, 2017.

For the past four weeks, uncontrolled wildfires resulted in evacuation orders for a number of communities in the Cariboo where

most of our Gibraltar employees reside. These evacuation orders have affected the complement of personnel who operate

Gibraltar, and access to and from the mine was also significantly curtailed during this period. This has resulted in reduced

production for periods of time as well as a complete mine shutdown for several days during July. Mining and milling operations

are beginning to return to normal as some evacuation orders have been lifted over the past week. Third quarter copper sales

volumes are expected to be up to 10% lower than the second quarter of 2017.

REVIEW OF PROJECTS

Taseko’s strategy has been to grow the Company by leveraging cash flow from the Gibraltar Mine to assemble and develop a

pipeline of projects. We continue to believe this will generate the best, long -term returns for shareholders. Our development

projects are located in British Columbia and Arizona and represent a diverse range of metals, including gold, copper,

molybdenum and niobium. During the second quarter of 2017, total expenditure of $4.6 million was incurred on the Florence

Copper, Aley and New Prosperi ty projects. Taseko will continue to take a prudent approach to spending on development

projects.

Florence Copper

In January 2017, the Company announced that completed technical work on the Florence property has resulted in a significant

improvement in project economics. On February 28, 2017, the NI 43-101 technical report documenting these results was filed

on www.sedar.com.

The Florence Copper project is currently in the final stages of permitting for the Production Test Facility (“PTF”). The PTF

will include a well field comprised of thirteen (four injection and ni ne recovery) commercial scale production wells and

numerous monitoring, observation and point of compliance wells, and also an integrated solvent extraction and electrowinning

plant.

REVIEW OF PROJECTS - CONTINUED

New Prosperity

On July 18, 2017, Taseko received approval from the Province of British Columbia to undertake a site investigation program

to conduct exploratory work at the New Prosperity project site. The Province issued a Notice of Work, which is a multi -year

permit from the Ministry of Energy & Mines that allows the Company to gather information for the purpose of advancing mine

permitting under the British Columbia Mines Act.

Taseko is proceeding with its request to amend the British Columbia environmental assessment certificate for the New

Prosperity Project.

The two Judicial Reviews initiated by Taseko were heard in federal court over a five day period in the week of January 30,

2017. Both Judicial Reviews focus on the principles of administrative and procedural fairness. Taseko’s allegati on is that the

Government of Canada, through the conduct of the environmental assessment and the decisions which resulted from it, failed

in their obligation to uphold those fundamental principles. A decision is expected from the court within six to nine m onths.

Note: Gibraltar is a contractual, unincorporated joint venture between Taseko Mines Limited (75% interest) and

Cariboo Copper Corp. (25% interest). All production and sales figures are reported on a 100% basis, unless

otherwise noted.

Taseko will host a conference call on Thursday, August 3, 2017 at 11:00 a.m. Eastern Time (8:00 a.m. Pacific) to discuss

these results. The conference call may be accessed by dialing (877) 303-9079 in Canada and the United States, or (970) 315-

0461 internationally. Alternatively, a live and archived webcast will also be available at tasekomines.com. The conference

call will be archived for later playback until August 10, 2017 and can be accessed by dialing (855) 859-2056 in Canada and

the United States, or (404) 537-3406 internationally and using the passcode 86630167.

For further information on Taseko, please see the Company's website at www.tasekomines.com or contact:

Brian Bergot, Vice President, Investor Relations – 778-373-4554, toll free 1-800-667-2114

Russell Hallbauer

President and CEO

No regulatory authority has approved or disapproved of the information in this news release.

NON-GAAP PERFORMANCE MEASURES

This document includes certain non -GAAP performance measures that do not have a standardized meaning prescribed by IFRS. These

measures may differ from those used by, and may not be comparable to such measures as reported by, other issuers. The Company believes

that these measures are commonly used by certain investors, in conjunction with conventional IFRS measures, to enhance their understanding

of the Company’s performance. These m easures have been derived from the Company’s financial statements and applied on a consistent

basis. The following tables below provide a reconciliation of these non-GAAP measures to the most directly comparable IFRS measure.

Total operating costs and site operating costs, net of by-product credits

Total costs of sales include all costs absorbed into inventory, as well as transportation costs. Site operating costs is calc ulated by removing

net changes in inventory and depletion and amortization and transp ortation costs from cost of sales. Site operating costs, net of by -product

credits is calculated by removing by -product credits from the site operating costs. Site operating costs, net of by -product credits per pound

are calculated by dividing the aggregat e of the applicable costs by copper pounds produced. Total operating costs per pound is the sum of

site operating costs, net of by-product credits and off-property costs divided by the copper pounds produced. By-product credits are calculated

based on actual sales of molybdenum (net of treatment costs) and silver during the period divided by the total pounds of copper produced

during the period. These measures are calculated on a consistent basis for the periods presented.

Three months ended

June 30,

Six months ended

June 30,

(Cdn$ in thousands, unless otherwise indicated) – 75% basis 2017 2016 2017 2016

Cost of sales 65,333 72,392 125,872 144,389

Less:

Depletion and amortization (11,799) (14,138) (21,376) (27,648)

Net change in inventory (4,998) (1,833) (3,593) (2,920)

Transportation costs (5,492) (4,012) (10,709) (7,605)

Site operating costs 43,044 52,409 90,194 106,216

Less by-product credits:

Molybdenum, net of treatment costs (4,335) - (10,142) -

Silver, excluding amortization of deferred revenue (82) (926) (530) (1,842)

Site operating costs, net of by-product credits 38,627 51,483 79,522 104,374

Total copper produced (thousand pounds) 29,531 22,973 60,474 44,588

Total costs per pound produced 1.31 2.24 1.31 2.34

Average exchange rate for the period (CAD/USD) 1.34 1.29 1.33 1.33

Site operating costs, net of by-product credits (US$ per pound) 0.97 1.74 0.99 1.76

Site operating costs, net of by-product credits 38,627 51,483 79,522 104,374

Add off-property costs:

Treatment and refining costs of copper concentrate 8,066 5,765 16,522 12,079

Transportation costs 5,492 4,012 10,709 7,605

Total operating costs 52,185 61,260 106,753 124,058

Total operating costs (C1) (US$ per pound) 1.31 2.07 1.32 2.09

NON-GAAP PERFORMANCE MEASURES - CONTINUED

Adjusted net income (loss)

Adjusted net income (loss) remove the effect of the following transactions from net income as reported under IFRS:

• Unrealized gains/losses on copper put options;

• Unrealized foreign currency gains/losses;

• Loss on settlement of long-term debt; and

• Non-recurring transactions, including related tax adjustments.

Management believes these transactions do not reflect the u nderlying operating performance of our core mining business and are not

necessarily indicative of future operating results. Furthermore, unrealized gains/losses on derivative instruments, changes in the fair value of

financial instruments, and unrealized f oreign currency gains/losses are not necessarily reflective of the underlying operating results for the

reporting periods presented.

Three months ended

June 30,

Six months ended

June 30,

($ in thousands, except per share amounts) 2017 2016 2017 2016

Net income (loss) 5,247 (19,384) 21,726 (20,899)

Unrealized (gain) loss on copper put options 373 (163) 425 -

Loss on copper call option 4,891 453 6,305 991

Unrealized foreign exchange gain (6,249) (2,052) (8,926) (21,677)

Loss on settlement of long-term debt 13,102 - 13,102 -

Other non-recurring expenses* - 1,978 - 5,408

Estimated tax effect of adjustments (3,059) (590) (3,072) (1,664)

Adjusted net income (loss) 14,305 (19,758) 29,560 (37,841)

Adjusted EPS 0.06 (0.09) 0.13 (0.17)

* Other non-recurring expenses includes legal and other advisory costs associated with the special shareholder meeting, the proxy contest and related litigation,

and other non-recurring financing costs.

EBITDA and adjusted EBITDA

EBITDA represents net income before interest, income taxes, and depreciation. EBITDA is presented because it is an important supplemental

measure of our performance and is frequently used by securities analysts, investors and other interested parties in the evaluation of companies

in the industry, many of which present EBITDA when reporting their results. Issuers of “high yield” securities also present EBITDA because

investors, analysts and rating agencies consider it useful in measuring the ability of those issuers to meet debt service obligations. The

Company believes EBITDA is an appropriate supplemental measure of debt service capacity, because cash expenditures on interes t are, by

definition, available to pay interest, and tax expense is inversely correlated to interest expense because tax expense goes down as deductible

interest expense goes up; depreciation is a non-cash charge.

Adjusted EBITDA is presented as a further supplemental measure of the Company’s performance and ability to service debt. A djusted

EBITDA is prepared by adjusting EBITDA to eliminate the impact of a number of items that are not considered indicative of ong oing

operating performance.