Excellon Resources Inc. announced that a U.S. District Court ruled in support of the United States Forest Service authorization of Excellon's Plan of Operations for the Kilgore Gold Project (the "Plan") to conduct mineral exploration activities in the Dubois Ranger District, Clark County, Idaho. As required by the National Environmental Policy Act, the Dubois Ranger District, Caribou-Targhee National Forest, and FS Region 4 conducted an environmental assessment ("EA") of the Plan submitted to the USFS in July 2020. After thorough review, the USFS determined that the Plan included appropriate safeguards and issued a Decision Notice/Finding of No Significant Impact ("DN/FONSI").

In Fourth Quarter 2021, the USFS authorized Excellon's Plan to conduct mineral exploration activities in The Dubois Ranger District, Clark counties, Idaho. In Second Quarter 2022, the Idaho Conservation League and Greater Yellowstone Coalition (the "ICL/GYC") filed a legal action (the "Action") in U.S. District Court challenging the USFS approval of the Plan. The Action followed the denial by the U.S. District Court of a motion filed by the ICL/GYC to reopen the 2018 proceeding against the USFS.

Excellon Idaho Gold Inc. ("Excellon Idaho Gold"), a subsidiary of Excellon, successfully filed a motion to intervene as a defendant intervenor to protect its interests in the matter. These legal proceedings did not impact the 2022 Kilgore drilling program. Following scheduled briefings and a hearing to adjudicate the matter on May 10, 2023, the court ruled in favour of the USFS and Excellon on August 4, 2023, upholding the EA and DN/FONSI, and rejecting ICL/GYC's claims against the USFS.