Overview

Drilling at Florida Mountain in 2021 will be dual-focused, including follow-up exploration on the high-grade shoots and structures below the existing resource and expanding the existing low-grade resource through drilling geochemical and geophysical anomalies to the east and west of the existing resource.

The Company has identified multiple high-grade gold-silver shoots at Florida Mountain. Integra’s exploration team has modeled 7 high-grade vein structures that appear similar in size and orientation to the historically productive high-grade Trade Dollar – Black Jack vein system. Most historic underground production stemmed from the Trade Dollar – Black Jack vein, while the remaining 6 veins saw limited production up until mining operations ceased with the start of World War I. The identified vein zones have an aggregate strike length of over 7,000 m. Within these vein zones are steeply dipping high-grade shoots with strike lengths of up to 200 m and down dip extensions of up to 300 m which are interpreted as having developed at structural intersections. Based on recent drill intercepts, the Company anticipates that the high-grade shoots are likely to have widths of between 1 m and 8 m.

Drilling is also planned to take place in the Florida Keys area, a large geochemical anomaly located immediately to the east of the resource that has seen limited drilling. The Florida Keys geochemical anomaly is of similar strength and size to the existing resource estimate footprint at the Florida Mountain Deposit. The Company also intends to drill in Rich Gulch, a target located in a large zone of Induced Polarization (“IP”) chargeability that was identified to the west of Florida Mountain as part of a 2020 geophysical survey. Based on limited historic drilling and the presence of historic underground workings in this area the Company sees potential for both additional low-grade and high-grade underground mineralization.

To view a map of Florida Mountain with competed and proposed drill holes, click here:

https://www.integraresources.com/site/assets/files/2572/florida_mountain_drill_map_vuse.pdf

To view an image of Rich Gulch, click here:

https://www.integraresources.com/site/assets/files/2572/rich_gulch_vuse.pdf

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The Florida Mountain Project is located 8.5 kilometers away from the Company’s DeLamar Project in southern Idaho. The two projects are connected by an all-weather haul road that was used historically by Kinross to transport mineralized material from Florida Mountain to DeLamar. Historical underground mining at Florida Mountain from the 1830s to 1910s produced a total of 133,000 ounces gold and 15.4 million ounces of silver. Modern open pit mining was conducted by Kinross Gold in the 1990s and produced an additional 124,500 ounces of gold and 2.6 million ounces of silver.

The open pit was closed in 1998 due low metal prices and the Florida Mountain Project, as an extension of the DeLamar Project, was placed on care and maintenance. The site of the open pit mine has been fully reclaimed and no drilling has been conducted on the property since the mine’s closure1.

The Florida Mountain project hosts a significant drill database consisting of over 1,050 drill holes. The majority of this historic drilling was completed by Kinross Gold and NERCO Minerals to define an deposit amenable to open pit mining.

Integra acquired the Florida Mountain Project in January 2018. The Florida Mountain property is free of all royaltes and other types of financial encumbrances.

1. NI 43-101 Technical Report and Preliminary Economic Assessment for the DeLamar and Florida Mountain Gold – Silver Project, Owyhee County, Idaho, USA. Dated October 22, 2019.