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Investor Presentaiton

KEY HIGHLIGHTS FROM WEIR INTERNATIONAL'S MAY 31, 2023 R UPDATE TO ITS ORIGINAL EXPLORATION REPORT 23% of the total REO basket consists of primary magnetic REOs of neodymium, praseodymium, dysprosium and terbium. RAMACO An additional 6% of the REO basket consists of secondary magnetic REOs of samarium, gadolinium and holmium. Estimated Brook Mine TREO Distribution by Oxide Estimated Brook Mine TREO Distribution by Oxide RESOURCES Primary Magnetic REOs: 22.86% Secondary Magnetic REOs: 6.26% 13.94% Y203 34.89% 40% 35% 30% 25% 20% 15.89% 15% 10% 4.21% 5% 2.36% 3.04% 2.75% 0.41% 0.47% 0% Nd2 03 Pr203 DY203 18.14% 13.94% La 203 Ce 203 Ho203 Gd203 Sm203 Tb203 Source: Weir International, Inc. Y203 0.49% Tm203 0.19% Lu203 18.14% La203 1.28% Yb203 15.89% Nd203 4.21% Pr6011 2.36% Dy203 0.41% Tb407 0.64% Eu203 CeO2 3.04% Sm203 2.75% Gd203 0.47% Ho203 1.28% 1.31% 0.64% 0.49% 0.19% 1.31% Er203 Tm 203 Eu203 Er203 Yb203 Lu203 34.89% 22

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