Drill Campaign At The Big Whopper Deposit

TORONTO - Avalon Advanced Materials Inc. reported on the 2024 winter drill campaign (total 10 holes) from the Separation Rapids Project in Kenora, Ontario. The 2024 winter drill campaign was conducted by the joint venture company Separation Rapids Ltd. Separation Rapids Ltd is a joint venture between SCR-Sibelco NV and Avalon Advanced Materials Inc.

The results represent 512 assay results from 5 diamond drill holes completed as part of the 2024 expansion and infill drill campaign at the current 750m strike long Big Whopper Deposit. The successful drill program focused on upgrading the 2023 Mineral Resource Estimation classification as well as to expand the mineral resources.

Highlights include: 1) SR24-114 intersected 1.67% Li2O over 105.6 meters from 313.5 meters depth and 1.78% Li2O over 21.5 meters from 143.5 meters depth. 2) SR24-113 intersected 1.68% Li2O over 66.2 meters from 292.2 meters depth and 1.95% Li2O over 32.6 meters from 121.0 meters depth. 3) SR24-115 intersected 1.81% Li2O over 13.8 meters from 93.5 meters depth. 4) SR24-116 intersected 1.69% Li2O over 8.9 meters from 313 meters depth and 1.67% Li2O over 12.7 meters from 325.3 meters depth.

Scott Monteith, CEO and Director, said, “We are very excited with these fantastic drill results, which are a true reflection of the exploration upside potential of the project. Our technical team is eager to follow up on some of the longer intercepts to better understand the depth potential for resource expansion. We continue to advance on our Thunder Bay Lithium processing facility."