Orla Mining Provides an Update on Infill Drilling at Camino Rojo Sulphides Deposit with Multiple Highly Positive Drill Intersections

3.41 g/t Au over 36m, incl. 29.2 g/t Au over 3.0 m,
2.94 g/t Au over 66.5 m, incl. 4.98 g/t Au over 16.5 m,
2.44 g/t Au over 49.5 m, incl. 4.59 g/t Au over 21.0 m, and
2.22 g/t Au over 96.5 m, incl. 3.24 g/t Au over 33.9 m

VANCOUVER, Jan. 25, 2024 - Orla Mining Ltd. (TSX: OLA) (NYSE: ORLA) ("Orla" or the "Company") is pleased to provide an update on its exploration activities at the Camino Rojo Sulphides in the second half of 2023.

In 2023, Orla undertook a 37,677-metre drill program, strategically focusing on infilling higher-grade parts of the Camino Rojo Sulphides deposit to support a potential underground Mineral Resource estimate. The primary objective was to enhance the understanding of geological controls of the deposit while extending selected drill holes to explore for sulphide mineralization beyond the current open pit Mineral Resource boundaries, referred to as the "Camino Rojo Extension." Orla previously presented results from 15 of 56 drill holes in the 2023 Sulphide drill program (June 22, 2023) and this news release presents results from an additional 23 drill holes. Results from the remaining 18 drill holes will be shared in the coming weeks.

Overall, infill drilling of the Camino Rojo Sulphides has consistently yielded long intercepts (>30 metres down holes) of greater than 2.0 grams of gold per tonne (g/t Au). These significant drill results align with previous work, reinforcing the potential for an underground mining scenario. Recent drilling has returned notable high-grade intercepts exceeding 10 g/t Au over core lengths ranging from 0.7 metres to 3.0 metres. These high-grade intersections are part of wider intervals of greater than 2.0 g/t Au over tens of metres. The presence of high-grade gold results highlights the opportunity to enhance value through the potential implementation of more selective and targeted underground mining techniques.

"New drill results at Camino Rojo are revealing more about controls on mineralization and hinting at potential for significant expansion below the current Mineral Resource in the Camino Rojo Extension. This data is crucial for our upcoming underground resource estimation, enhancing our understanding of this important part of our growth pipeline."

- Sylvain Guerard, Orla's Senior Vice President, Exploration

See the appendix of this news release for full drill results.

This most recent drilling campaign, part of Orla south-oriented drill hole programs, has continued to reduce overall drillhole spacing to approximately 25-30 metres within part of the Camino Rojo Sulphides. (Historical north-oriented drill holes had approximately 50-metre spacing). The 2023 drilling efforts consistently intercepted extensive zones (>30 metres down-hole drill length) of higher-grade gold mineralization (>2 g/t Au), often including zones of >3 g/t Au over tens of metres, with more narrow intervals of 0.7-3.0 metres of >10g/t. Assay results from 19 of the 23 drillholes reported in this news release have returned 27 significant mineralized drill intercepts with a grade-by-thickness factor greater than 50 g/t Au by metre (g/t * m), including 11 intercepts with grade-by-thickness factor greater than 100 g/t Au by metre. The newly acquired drill data significantly improves our understanding of the location and continuity of structures controlling higher grade gold mineralization, providing more precise insights compared to what was achievable with historical drilling results. Full drill results are available in the Appendix to this news release and are available at www.orlamining.com.

All metres reported above are down-hole intervals, with true width estimates ranging from 60-98% of the reported interval for all composites >5 grade-by-thickness factor (Au g/t*m). See Table 1 in the Appendix to this news release for estimated true widths of individual composites. A standard sampling length of 1.5m is used with a minimum of 0.5m when required based on geologic contacts. All drill core is HQ diameter. The reported composites were not subject to "capping" however a preliminary analysis suggests that only 4 out of 4,111 samples from the reported holes exceeded the potential capping level of 27.0 g/t. These samples averaged 43.6 g/t gold (max. 69.1 g/t). Orla believes that applying a top cut would have a negligible effect on overall grades. Composites for the sulphide drilling were calculated using 1 g/t Au cut-off grade and maximum 6 metres consecutive waste.

The final assay results from the 2023 Sulphide Infill and Extension drilling programs, comprising 18 drill holes, are anticipated to be released in the coming weeks. The successful completion of the 2023 Sulphide infill drill program marks a significant milestone. Looking ahead to 2024, the Company remains committed to near-mine exploration, now shifting its primary focus towards evaluating the extensive potential of the open Camino Rojo deposit, extending into the promising Camino Rojo Extension beneath the current Sulphide mineral resource. To achieve this objective, Orla plans to execute an aggressive 30,000-metre drill program in 2024. Building upon insights gained from the 2023 drilling efforts and historical work, this program aims to further investigate the exciting potential beneath the existing mineral resource.

Figure 1: Plan View Showing Location of Reported Drill Holes

Figure 2: Camino Rojo Long Section Drill Intersection Highlights

Figure 3: Camino Rojo Cross Section Drill Intersection Highlights for Fence CRSX23-19

Figure 4: Camino Rojo Cross Section Drill Intersection Highlights for Fence CRSX23-20

The scientific and technical information in this news release has been reviewed and approved by Mr. Sylvain Guerard, P Geo., SVP Exploration of the Company, who is the Qualified Person as defined under the definitions of National Instrument 43-101 ("NI 43-101").

To verify the information related to the 2022 and 2023 drilling programs at the Camino Rojo property, Mr. Guerard has visited the property in the past year; discussed logging, sampling, and sample shipping processes with responsible site staff; discussed and reviewed assay and QA/QC results with responsible personnel; and reviewed supporting documentation, including drill hole location and orientation and significant assay interval calculations.

All gold results at Camino Rojo were obtained by ALS Minerals (Au-AA23) using fire assay fusion and an atomic absorption spectroscopy finish. All samples are also analyzed for multi-elements, including silver, copper, lead and zinc using a four-acid digestion with ICP-AES finish (ME-ICP61) method at ALS Laboratories in Canada. If samples were returned with gold values in excess of 10 ppm or base metal values in excess of 1% by ICP analysis, samples are re-run with gold (Au-GRA21) by fire assay and gravimetric finish or base metal by (OG62) four acid overlimit methods. Drill program design, Quality Assurance/Quality Control and interpretation of results were performed by qualified persons employing a Quality Assurance/Quality Control program consistent with NI 43-101 and industry best practices. Standards were inserted at a frequency of one in every 50 samples, and blanks were inserted at a frequency of one in every 50 samples for Quality Assurance/Quality Control purposes by the Company as well as the lab. ALS Minerals and ALS Laboratories are independent of Orla. There are no known drilling, sampling, recovery, or other factors that could materially affect the accuracy or reliability of the drilling data at Camino Rojo.

For additional information on the Company's previously reported drill results, see the Company's press releases dated February 4, 2021 (Orla Mining Provides Exploration Update), September 12, 2022 (Orla Mining Advances Exploration & Growth Pipeline),January 31, 2023 (Orla Mining Continues to Intersect Wide, Higher-Grade Sulphide Zones and Expose Deeper Potential at Camino Rojo, Mexico) and June 22, 2023 (Orla Mining Provides Update On Successful Drilling Program In Mexico).

Historical drill results at Camino Rojo were completed by Goldcorp. Inc. ("Goldcorp"), a prior owner of the project. The Company's independent qualified person, Independent Mining Consultants, Inc. was of the opinion that the drilling and sampling procedures for Camino Rojo drill samples by Goldcorp (and prior to its acquisition by Goldcorp, Canplats Resources Corp.) were reasonable and adequate for the purposes of the Camino Rojo Report, and that the Goldcorp QA/QC program met or exceeded industry standards. See the Camino Rojo Report for additional information.

Orla is operating the Camino Rojo Oxide Gold Mine, a gold and silver open-pit and heap leach mine, located in Zacatecas State, Mexico. The property is 100% owned by Orla and covers over 160,000 hectares. The technical report for the 2021 Feasibility Study on the Camino Rojo oxide gold project entitled "Unconstrained Feasibility Study NI 43-101 Technical Report on the Camino Rojo Gold Project - Municipality of Mazapil, Zacatecas, Mexico" dated January 11, 2021 (the "Camino Rojo Report"), is available on SEDAR and EDGAR under the Company's profile at www.sedar.com and www.sec.gov, respectively. Orla also owns 100% of Cerro Quema located in Panama which includes a gold production scenario and various exploration targets. Cerro Quema is a proposed open pit mine and gold heap leach operation. The technical report for the Pre-Feasibility Study on the Cerro Quema oxide gold project entitled "Project Pre-Feasibility Updated NI 43-101 Technical Report on the Cerro Quema Project, Province of Los Santos, Panama" dated January 18, 2022, is available on SEDAR and EDGAR under the Company's profile at www.sedar.com and www.sec.gov, respectively. Orla also owns 100% of the South Railroad Project, a feasibility-stage, open pit, heap leach project located on the Carlin trend in Nevada. The technical report for the 2022 Feasibility Study entitled "South Railroad Project, Form 43-101F1 Technical Report Feasibility Study, Elko County, Nevada" dated March 23, 2022, is available on SEDAR and EDGAR under the Company's profile at www.sedar.com and www.sec.gov, respectively. The technical reports are available on Orla's website at www.orlamining.com.

This news release contains certain "forward-looking information" and "forward-looking statements" within the meaning of Canadian securities legislation and within the meaning of Section 27A of the United States Securities Act of 1933, as amended, Section 21E of the United States Exchange Act of 1934, as amended, the United States Private Securities Litigation Reform Act of 1995, or in releases made by the United States Securities and Exchange Commission, all as may be amended from time to time, including, without limitation, statements regarding: the potential mineralization at the Camino Rojo Sulphides based on the 2023 drill program, the potential development scenarios for the Camino Rojo Sulphides and the Company's 2024 exploration plans, including the goals, potential results and timing thereof. Forward-looking statements are statements that are not historical facts which address events, results, outcomes or developments that the Company expects to occur. Forward-looking statements are based on the beliefs, estimates and opinions of the Company's management on the date the statements are made and they involve a number of risks and uncertainties. Certain material assumptions regarding such forward-looking statements were made, including without limitation, assumptions regarding: the future price of gold and silver; anticipated costs and the Company's ability to fund its programs; the Company's ability to carry on exploration, development, and mining activities; tonnage of ore to be mined and processed; ore grades and recoveries; decommissioning and reclamation estimates; the Company's ability to secure and to meet obligations under property agreements, including the layback agreement with Fresnillo plc; that all conditions of the Company's credit facility will be met; the timing and results of drilling programs; mineral reserve and mineral resource estimates and the assumptions on which they are based; the discovery of mineral resources and mineral reserves on the Company's mineral properties; that political and legal developments will be consistent with current expectations; the timely receipt of required approvals and permits, including those approvals and permits required for successful project permitting, construction, and operation of projects; the timing of cash flows; the costs of operating and exploration expenditures; the Company's ability to operate in a safe, efficient, and effective manner; the Company's ability to obtain financing as and when required and on reasonable terms; that the Company's activities will be in accordance with the Company's public statements and stated goals; and that there will be no material adverse change or disruptions affecting the Company or its properties. Consequently, there can be no assurances that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements involve significant known and unknown risks and uncertainties, which could cause actual results to differ materially from those anticipated. These risks include, but are not limited to: uncertainty and variations in the estimation of mineral resources and mineral reserves; the Company's dependence on the Camino Rojo oxide mine; risks related to the Company's indebtedness; risks related to exploration, development, and operation activities; risks related to natural disasters, terrorist acts, health crises, and other disruptions and dislocations, including the COVID-19 pandemic; foreign country and political risks, including risks relating to foreign operations and expropriation or nationalization of mining operations and risks associated with operating in Mexico and Panama; delays in obtaining or failure to obtain governmental permits, or non-compliance with permits; environmental and other regulatory requirements; delays in or failures to enter into a subsequent agreement with Fresnillo plc with respect to accessing certain additional portions of the mineral resource at the Camino Rojo project and to obtain the necessary regulatory approvals related thereto; the mineral resource estimations for the Camino Rojo project being only estimates and relying on certain assumptions; loss of, delays in, or failure to get access from surface rights owners; uncertainties related to title to mineral properties; water rights; financing risks and access to additional capital; risks related to guidance estimates and uncertainties inherent in the preparation of feasibility and pre-feasibility studies; uncertainty in estimates of production, capital, and operating costs and potential production and cost overruns; the fluctuating price of gold and silver; unknown labilities in connection with acquisitions; global financial conditions; uninsured risks; climate change risks; competition from other companies and individuals; conflicts of interest; risks related to compliance with anti-corruption laws; volatility in the market price of the Company's securities; assessments by taxation authorities in multiple jurisdictions; foreign currency fluctuations; the Company's limited operating history; litigation risks; the Company's ability to identify, complete, and successfully integrate acquisitions; intervention by non-governmental organizations; outside contractor risks; risks related to historical data; the Company not having paid a dividend; risks related to the Company's foreign subsidiaries; risks related to the Company's accounting policies and internal controls; the Company's ability to satisfy the requirements of Sarbanes-Oxley Act of 2002; enforcement of civil liabilities; the Company's status as a passive foreign investment company for U.S. federal income tax purposes; information and cyber security; gold industry concentration; shareholder activism; and risks associated with executing the Company's objectives and strategies; as well as those risk factors discussed in the Company's most recently filed management's discussion and analysis, as well as its annual information form dated March 20, 2023, which are available on www.sedarplus.ca and www.sec.gov. Except as required by the securities disclosure laws and regulations applicable to the Company, the Company undertakes no obligation to update these forward-looking statements if management's beliefs, estimates or opinions, or other factors, should change.

This news release has been prepared in accordance with Canadian standards for the reporting of mineral resource and mineral reserve estimates, which differ from the previous and current standards of the United States securities laws. In particular, and without limiting the generality of the foregoing, the terms "mineral reserve", "proven mineral reserve", "probable mineral reserve", "inferred mineral resources,", "indicated mineral resources," "measured mineral resources" and "mineral resources" used or referenced herein and the documents incorporated by reference herein, as applicable, are Canadian mineral disclosure terms as defined in accordance with Canadian National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") and the Canadian Institute of Mining, Metallurgy and Petroleum (the "CIM") - CIM Definition Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as amended (the "CIM Definition Standards").

For United States reporting purposes, the United States Securities and Exchange Commission (the "SEC") has adopted amendments to its disclosure rules (the "SEC Modernization Rules") to modernize the mining property disclosure requirements for issuers whose securities are registered with the SEC under the Exchange Act, which became effective February 25, 2019. The SEC Modernization Rules more closely align the SEC's disclosure requirements and policies for mining properties with current industry and global regulatory practices and standards, including NI 43-101, and replace the historical property disclosure requirements for mining registrants that were included in SEC Industry Guide 7. Issuers were required to comply with the SEC Modernization Rules in their first fiscal year beginning on or after January 1, 2021. As a foreign private issuer that is eligible to file reports with the SEC pursuant to the multi-jurisdictional disclosure system, the Corporation is not required to provide disclosure on its mineral properties under the SEC Modernization Rules and will continue to provide disclosure under NI 43-101 and the CIM Definition Standards. Accordingly, mineral reserve and mineral resource information contained or incorporated by reference herein may not be comparable to similar information disclosed by United States companies subject to the United States federal securities laws and the rules and regulations thereunder.

As a result of the adoption of the SEC Modernization Rules, the SEC now recognizes estimates of "measured mineral resources", "indicated mineral resources" and "inferred mineral resources." In addition, the SEC has amended its definitions of "proven mineral reserves" and "probable mineral reserves" to be "substantially similar" to the corresponding CIM Definition Standards that are required under NI 43-101. While the SEC will now recognize "measured mineral resources", "indicated mineral resources" and "inferred mineral resources", U.S. investors should not assume that all or any part of the mineralization in these categories will be converted into a higher category of mineral resources or into mineral reserves without further work and analysis. Mineralization described using these terms has a greater amount of uncertainty as to its existence and feasibility than mineralization that has been characterized as reserves. Accordingly, U.S. investors are cautioned not to assume that all or any measured mineral resources, indicated mineral resources, or inferred mineral resources that the Company reports are or will be economically or legally mineable without further work and analysis. Further, "inferred mineral resources" have a greater amount of uncertainty and as to whether they can be mined legally or economically. Therefore, U.S. investors are also cautioned not to assume that all or any part of inferred mineral resources will be upgraded to a higher category without further work and analysis. Under Canadian securities laws, estimates of "inferred mineral resources" may not form the basis of feasibility or pre-feasibility studies, except in rare cases. While the above terms are "substantially similar" to CIM Definitions, there are differences in the definitions under the SEC Modernization Rules and the CIM Definition Standards. Accordingly, there is no assurance any mineral reserves or mineral resources that the Company may report as "proven mineral reserves", "probable mineral reserves", "measured mineral resources", "indicated mineral resources" and "inferred mineral resources" under NI 43-101 would be the same had the Company prepared the reserve or resource estimates under the standards adopted under the SEC Modernization Rules or under the prior standards of SEC Industry Guide 7.

Table 1: Camino Rojo Sulphide Infill Composite Drill Results (Composites 1g/t Au cog)

Criteria: Cut off grade 1g/t Au, minimum length 1.5m, maximum consecutive internal waste 6m, if Au grade x length > 1.5 the composite will be added
Price Assumptions: Au = 1750usd oz, Ag = 21usd oz, Cu = 3.5usd lb, Zn = 1.2usd lb
AuEq include (Au+Ag+Cu+Zn)
FR= Fresh Rock, OX= Oxide, TROL= Transition Oxide Low, TROH= Transition Oxide High, MX= Mixed, TRSX= Transition Sulphide, SX= Sulphide

Table 2: Camino Rojo Drill Hole Collars

SOURCE Orla Mining Ltd.