Coeur Mining has reported an update on its 2021 exploration programs at its Palmarejo and Kensington operations, following its update on February 17. the Company also highlighted new drilling results at its Silvertip and Wharf mines. Coeur drilled approximately 698,100 feet (212,775 meters) from 27 active rigs at six different locations through the first seven months of 2021, reflecting a year-over-year increase of roughly 58 %.

The Company plans to invest approximately $75 million1 in exploration this year, nearly 50 % higher than last year's record exploration investment, representing one of the sector's largest exploration programs. Drilling at Kensington identifying additional high-grade growth opportunities - Building on late last year's infill program, Coeur began 2021 by drilling on the Elmira vein located approximately 2,700 feet (825 meters) east of the Kensington Main deposit while also testing expansion targets beyond Elmira, including the Johnson vein. Coeur's elevated level of exploration investment at Kensington the past two years is intended to extend mine life and generate future potential growth opportunities beyond its existing reserves and resources. Notable assay results include: Elmira - Infill & Expansion- Hole EL21-0850-192-X30 returned 14.6 feet (4.5 meters) of 1.06 oz/t (36.3 g/t) gold, Hole EL21-0850-192-X23 returned 19.7 feet (6.0 meters) of 0.48 oz/t (16.5 g/t) gold, Hole EL21-0850-156-X11 returned 10.4 feet (3.2 meters) of 0.81 oz/t (27.8 g/t) gold, 0.8 feet (0.2 meters) of 6.43 oz/t (220.4 g/t) gold and 1.4 feet (0.4 meters) of 1.54 oz/t (53.7 g/t) gold.

Johnson - Expansion- Hole JN21-0900-181-X02 returned 1.2 feet (0.4 meters) of 1.31 oz/t (45.7 g/t) gold, Hole JN21-0900-181-X04 returned 4.3 feet (1.3 meters) of 0.34 oz/t (11.7 g/t) gold, Hole JN21-0900-181-X05 returned 3.6 feet (1.1 meters) of 0.72 oz/t (24.7 g/t) gold. New Southern Silver zone at Silvertip continues to demonstrate growth potential - New surface and underground drilling has discovered a flat-lying "manto" portion of the Southern Silver zone. As highlighted below, the manto appears to be thicker in places than the previously drilled vertical breccia zones interpreted as mineralized feeder structures.

After further analysis, the Company believes several other manto-feeder relationships may be present at the Discovery, Camp Creek and Central zones, and that underground drilling is the best approach to test these types of structures. Notable expansion drilling assay results from the Southern Silver zone manto mineralization include: Hole W21R-4781 returned 120 feet (36.6 meters) of 0.22 oz/t (7.5 g/t) gold, Hole W21R-4826 returned 200 feet (61.0 meters) of 0.12 oz/t (4.1 g/t) gold, Hole W21R-4812 returned 40 feet (12.2 meters) of 0.31 oz/t (10.6 g/t) gold, Hole W21R-4827 returned 70 feet (21.3 meters) of 0.14 oz/t (4.8 g/t) gold. Guazapares district (greenfields exploration)- Field reconnaissance has identified areas of surface alteration and quartz veining east of Palmarejo in the Guazapares district, which was acquired in 2015 as part of the acquisition of Paramount Gold and Silver Corp., sits outside the gold stream area of interest and totals nearly 15,000 hectares.

Drill permitting at an initial target area (Carmela) is currently underway with the objective of commencing drilling at this new target by the end of the year. Coeur plans to transition its focus on various resource expansion targets in the remainder of 2021, while also continuing the infill program at the Independencia North, Hidalgo and La Patria zones. The Company's priority targets for expansion drilling during the remainder of the year include (i) expanding the Hidalgo zone northwest towards the haul road, (ii) extending the North Independencia zone, (iii) drilling the southeast extension of the La Patria zone, (iv) scout drilling of the El Ojito zone, located in the northeastern portion of the Independencia deposit and subparallel to the Hidalgo zone, and (v) testing the new Carmela target located to the east within the Guazapares district.

Palmarejo 2021 Production & Exploration Guidance and Year-End 2020 Reserves and Resources: 2021E Production4: 100,000 - 110,000 ounces of gold and 6.5 - 7.8 million ounces of silver, 2021E Exploration Investment1: Approximately $14 million ($9 million expensed and $5 million capitalized), 2020 Proven and Probable Reserves: 849,000 ounces of gold at an average grade of 0.06 oz/t (1.9 g/t) and 59.4 million ounces of silver at an average grade of 3.9 oz/t (132.8 g/t), 2020 Measur ed and Indicated Resources: 613,000 ounces of gold at an average grade of 0.05 oz/t (1.6 g/t) and 51.1 million ounces of silver at an average grade of 3.8 oz/t (130.6 g/t), 2020 Inferred Resources: 280,000 ounces of gold at an average grade of 0.06 oz/t (2.2 g/t) and 14.5 million ounces of silver at an average grade of 3.3 oz/t (114.6 g/t). The 2021 Kensington exploration program started with two underground core rigs focused on infill drilling along the Elmira and Jualin vein structures. .

Recent drilling has encountered flat-lying, manto-style mineralization with meaningful thicknesses, highlighting the potential to grow resource tonnage with additional drilling. These results suggest that the ore body in the zone consists of both vertical- and flat-lying manto-style mineralization. Notably, this new interpretation may apply to other zones at Silvertip that have not yet had the benefit of underground drilling to test for both vertical- and flat-lying mineralization which could lead to higher angle structures that support additional resource tonnage.