Pan American Silver Reports Mineral Reserves and Mineral Resources as at June 30, 2023

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Aug 24, 2023

Pan American Silver Corp. (NYSE: PAAS) (TSX: PAAS) ("Pan American" or the "Company") reports its estimated mineral reserves and mineral resources as at June 30, 2023, inclusive of the assets acquired through the Yamana Gold Inc. ("Yamana") transaction. Please see the Company's news release dated March 31, 2023, announcing the completion of the Yamana transaction for further information. Proven and probable mineral reserves are estimated to contain approximately 576.6 million ounces of silver and 12.9 million ounces of gold. Measured and indicated ("M&I") mineral resources (excluding proven and probable reserves) are estimated to total approximately 959.1 million ounces of silver and 17.5 million ounces of gold. Inferred mineral resources total 479.4 million ounces of silver and 9.2 million ounces of gold.

"The addition of the assets from the Yamana transaction has resulted in a significant increase in Pan American's reserve and resource base," said Christopher Emerson, Pan American’s Vice President of Exploration and Geology. "Our exploration and geology teams are currently designing the drill programs across the combined portfolio with an emphasis on near site exploration and further resource conversion. Pan American plans to complete over 480,000 metres of drilling in 2023."

Consolidated Proven and Probable Mineral Reserves, as at June 30, 2023(1,2,3)

Segment

Category

Tonnes (Mt)

Ag (g/t)

Contained Ag (Moz)

Au (g/t)

Contained Au (Moz)

Silver Segment(4)

Proven Reserves

18.1

260

150.7

0.69

0.18

Probable Reserves

34.3

281

310.1

0.53

0.46

Proven and Probable Reserves

52.3

274

460.8

0.57

0.64

Gold Segment(5)

Proven Reserves

450.6

5

57.5

0.49

7.17

Probable Reserves

379.0

5

58.3

0.42

5.13

Proven and Probable Reserves

829.6

5

115.8

0.46

12.30

Total Segments(6,7)

Proven Reserves

468.7

16

208.2

0.50

7.35

Probable Reserves

413.2

31

368.5

0.43

5.60

Proven and Probable Reserves

881.9

23

576.6

0.47

12.94

(1) See table below entitled "Metal price assumptions used to estimate mineral reserves and mineral resources as at June 30, 2023".
(2) Please refer to the mineral reserve and resource tables by operation at the end of this news release for more information.
(3) This summary table does not include base metal grades or contents. Please refer to the Reserves & Resources page on Pan American’s web site for a more complete table, including Zinc, Lead and Copper grades and contents.
(4) Silver Segment comprised of Huaron, Morococha, La Colorada, San Vicente, Escobal and Cerro Moro.
(5) Gold Segment comprised of La Arena, Shahuindo, Dolores, Timmins, Minera Florida, El Peñon, Jacobina, MARA and Jeronimo.
(6) Totals may not add up due to rounding. Total average grades of each metal are with respect to those mines that produce the metal.
(7) As announced on July 31, 2023, and subsequent to the effective date of the mineral reserve and mineral resource update as at June 30, 2023, Pan American had entered into binding agreements to divest Morococha, MARA and Jeronimo. The corresponding mineral reserves and mineral resources will be removed on completion of those transactions.

Consolidated Mineral Resources, as at June 30, 2023(1,2,3,4)

Segment

Category

Tonnes (Mt)

Ag (g/t)

Contained Ag (Moz)

Au (g/t)

Contained Au (Moz)

Silver Segment(5)

Measured Resources

21.8

157

110.2

0.62

0.07

Indicated Resources

257.2

96

796.4

0.49

0.30

M&I Resources

279.1

101

906.6

0.51

0.37

Gold Segment(6)

Measured Resources

380.2

9

16.4

0.56

6.82

Indicated Resources

823.4

8

36.2

0.39

10.27

M&I Resources

1,203.6

8

52.6

0.44

17.09

Total Segments(7,8)

Measured Resources

402.0

52

126.6

0.56

6.89

Indicated Resources

1,080.6

64

832.5

0.39

10.56

M&I Resources

1,482.7

62

959.1

0.44

17.46

(1) See table below entitled "Metal price assumptions used to estimate mineral reserves and mineral resources as at June 30, 2023".
(2) Mineral resources are reported exclusive of mineral reserves.
(3) Please refer to the mineral reserve and resource tables by operation at the end of this news release for more information.
(4) This summary table does not include base metal grades or contents. Please refer to the Reserves & Resources page on Pan American’s web site for a more complete table, including Zinc, Lead and Copper grades and contents.
(5) Silver Segment comprised of Huaron, Morococha, La Colorada, San Vicente, Escobal and Cerro Moro.
(6) Gold Segment comprised of La Arena, Shahuindo, Dolores, Timmins, Minera Florida, El Peñon, Jacobina, MARA and Jeronimo.
(7) Totals may not add up due to rounding. Total average grades of each metal are with respect to those mines that produce the metal.
(8) As announced on July 31, 2023, and subsequent to the effective date of the mineral reserve and mineral resource update as at June 30, 2023, Pan American had entered into binding agreements to divest Morococha, MARA and Jeronimo. The corresponding mineral reserves and mineral resources will be removed on completion of those transactions.

Consolidated Inferred Mineral Resources, as at June 30, 2023(1,2,3,4)

Segment

Category

Tonnes (Mt)

Ag (g/t)

Contained Ag (Moz)

Au (g/t)

Contained Au (Moz)

Silver Segment(5)

Inferred Resources

224.3

58

417.7

0.63

0.36

Gold Segment(6)

Inferred Resources

649.6

4

61.6

0.42

8.88

Total Segments(7,8)

Inferred Resources

873.9

22

479.4

0.43

9.24

(1) See table below entitled "Metal price assumptions used to estimate mineral reserves and mineral resources as at June 30, 2023".
(2) Mineral resources are reported exclusive of mineral reserves.
(3) Please refer to the mineral reserve and resource tables by operation at the end of this news release for more information.
(4) This summary table does not include base metal grades or contents. Please refer to the Reserves & Resources page on Pan American’s web site for a more complete table, including Zinc, Lead and Copper grades and contents.
(5) Silver Segment comprised of Huaron, Morococha, La Colorada, San Vicente, Escobal and Cerro Moro.
(6) Gold Segment comprised of La Arena, Shahuindo, Dolores, Timmins, Minera Florida, El Peñon, Jacobina, MARA and Jeronimo.
(7) Totals may not add up due to rounding. Total average grades of each metal are with respect to those mines that produce the metal.
(8) As announced on July 31, 2023, and subsequent to the effective date of the mineral reserve and mineral resource update as at June 30, 2023, Pan American had entered into binding agreements to divest Morococha, MARA and Jeronimo. The corresponding mineral reserves and mineral resources will be removed on completion of those transactions.

Mineral resource estimate for the La Colorada Skarn, as at September 13, 2022, and previously reported:

Classification

Cut-off Value

(US$/tonne)

Tonnes (Mt)

Zinc %

Lead %

Silver (g/t)

Indicated

45

95.9

2.77

1.28

31

Inferred

45

147.8

2.29

1.04

28

(1) See table below entitled "Metal price assumptions used to estimate mineral reserves and mineral resources as at June 30, 2023".
(2) See news release dated September 14, 2022 for further information.

Pan American plans to provide an update for the La Colorada Skarn mineral resource estimate and a Preliminary Economic Assessment of the Skarn project, as part of an updated Technical Report for the La Colorada Property to be released late 2023.

Consolidated reserve and resource highlights for the 12 months ended June 30, 2023:

  • Silver mineral reserves increased from 515 million ounces to 577 million ounces, net of mining depletion. Gold mineral reserves increased from 3.6 million ounces to 12.9 million ounces.
  • M&I mineral resources exclusive of proven and probable mineral reserves increased from 839 million ounces to 959 million ounces for silver and from 8.1 million ounces to 17.5 million ounces for gold.
  • The marked increase in year-over-year mineral reserves and M&I mineral resources reflects the inclusion of the mineral resource and mineral reserves for the assets acquired through the Yamana transaction.
  • Inferred silver mineral resource decreased from 508 million ounces to 479 million ounces, which reflects the removal of the inferred mineral resource for the Shahuindo sulphides following metallurgical test work that indicated that the resource would not have a reasonable prospect for eventual economic extraction, as described in the technical report for Shahuindo dated November 30, 2022.
  • Inferred gold mineral resource increased from 5.7 million ounces to 9.2 million ounces, largely through the inclusion of the inferred mineral resources of the assets acquired through the Yamana transaction.

A detailed summary of the silver and gold mineral reserves and mineral resources as at June 30, 2023 is provided in the following tables.

Consolidated Pan American Mineral Reserves as at June 30, 2023(1,2)

Property

Location

Classification

Tonnes (Mt)

Ag (g/t)

Contained Ag (Moz)

Au (g/t)

Contained Au (koz)

Silver Segment

Huaron

Peru

Proven

6.0

174

33.4

--

--

Probable

3.3

166

17.5

--

--

Morococha (92.3%)(3,4)

Peru

Proven

3.3

156

16.6

--

--

Probable

3.3

158

16.6

--

--

La Colorada

Mexico

Proven

5.0

296

47.2

0.21

33.8

Probable

4.2

292

39.1

0.19

25.3

San Vicente (95%)(3)

Bolivia

Proven

0.7

341

8.2

--

--

Probable

0.7

278

6.4

--

--

Escobal

Guatemala

Proven

2.5

486

39.5

0.42

34.2

Probable

22.1

316

225.0

0.34

243.8

Cerro Moro

Argentina

Proven

0.5

330

5.7

6.33

109.7

Probable

0.7

237

5.6

8.18

192.2

Total Silver Segment(5)

52.3

274

460.8

0.57

639.1

Gold Segment

La Arena

Peru

Proven

15.1

--

--

0.38

183.4

Probable

17.5

--

--

0.28

159.7

Shahuindo

Peru

Proven

58.8

8

15.1

0.51

967.8

Probable

33.6

6

6.8

0.40

436.8

Dolores

Mexico

Proven

6.3

17

3.4

0.53

108.6

Probable

1.3

24

1.0

0.53

22.1

Timmins

Canada

Proven

5.0

--

--

2.93

473.5

Probable

4.7

--

--

2.80

419.4

Minera Florida

Chile

Proven

0.9

26

0.7

3.25

89.6

Probable

2.0

20

1.3

3.28

210.6

El Peñon

Chile

Proven

0.9

213

6.2

5.35

155.6

Probable

5.2

148

24.6

4.21

699.5

Jacobina

Brazil

Proven

27.0

--

--

2.00

1,737.8

Probable

21.3

--

--

2.06

1,404.8

MARA (56.25%)(4)

Argentina

Proven

330.3

3

32.1

0.25

2,654.8

Probable

291.2

3

24.6

0.16

1,497.7

Jeronimo (57.0%)(4)

Chile

Proven

6.4

--

--

3.91

798.3

Probable

2.3

--

--

3.79

284.1

Total Gold Segment(5)

829.6

5

115.8

0.46

12,304.2

Total Gold and Silver Segments(5)

Proven + Probable

881.9

23

576.6

0.47

12,943.3

(1) See table below entitled "Metal price assumptions used to estimate mineral reserves and mineral resources as at June 30, 2023".
(2) This summary table does not include base metal grades or contents. Please refer to the Reserves & Resources page on Pan American’s web site for a more complete table, including Zinc, Lead and Copper grades and contents.
(3) This information represents the portion of mineral reserves attributable to Pan American based on its ownership interest in the operating entity as indicated.
(4) As announced on July 31, 2023, and subsequent to the effective date of the mineral reserve and mineral resource update as at June 30, 2023, Pan American had entered into binding agreements to divest Morococha, MARA and Jeronimo. The corresponding mineral reserves and mineral resources will be removed on completion of those transactions.
(5) Totals may not add up due to rounding. Total average grades of each metal are with respect to those mines that produce the metal.

Pan American Silver Measured and Indicated Mineral Resources as at June 30, 2023(1,2,3)

Property