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Aya Gold & Silver Inc.

For the period ended Oct 20, 2026. Filed Oct 21, 2026.

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Oct 20, 2026 · Filed Oct 21, 2026

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AYA$25.37+3.4%Stored close · as of Nov 6, 2026
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Contents

EX-99.1 · Table 13-1 Summary of Testwork Programs

Table 13-1 Summary of Testwork Programs

Testwork ProgramMineralogyComminutionGravityFlotationDirect Cyanidation/CILChlorinationRoast – CIL/CyanidationPOX – CIL/CyanidationBIOX – CIL/CyanidationAlbion – CIL/CyanidationMACH Reactor - Cyanidation
SODIM / BRPM SODECAT 1986-1991 (Pilot-scale)P
URSTM 2011 (tailings sample)P
Nicromet 2013 (tailings sample)P
CINF 2017 (tailings sample)PPP
SGS Lakefield 2018 (tailings and fresh rock samples)PPPPP
SGS Lakefield 2019 (fresh rock sample)PPPPP
SGS Lakefield 2022 (composited fresh rock sample)PPPPPPPP
AFRILAB 2023 Sample Campaign (fresh rock)P
SGS Lakefield 2023-2024 (composited fresh rock and pyrite concentrate samples)PPPPP
Mintek 2024 (pyrite concentrate sample)PP
BGRIMM 2025 (bulk pyrite concentrate sample)PP

Details of the historical testwork (1986-2017) can be found in the published Technical Report and Preliminary Economic Assessment on the Boumadine Project issued on 24 May 2019. Since the results have not been used in the development of the process design criteria, they will not be further discussed in this report. Details of the testwork done by Mintek (2024) have also not been provided since the results were not used toward the development of the process plant design and contained confidential information.

The metallurgical sampling locations for the material tested in the recent programs (2021-present) are shown by disks in the cross-sectional model renderings shown in Figure 13-1.

AYA GOLD & SILVER INC., BOUMADINE POLYMETALLIC PROJECT 100

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