Bruce Winfield

President and a Director of Orestone Mining Corp. (TSXV: ORS), and a Director of Platauro Metals Corp. M.Sc., P.Geo. More than 40 years of experience in the minerals industry as a geologist, corporate executive and consultant. Following 14 years with the major mining companies Texasgulf Inc. and Boliden Inc., he held the position of VP Exploration for Greenstone Resources, Pan American Mineral Corp. and Eldorado Gold Corporation, leading the exploration and development of five gold deposits including the Oronorte Gold Mine in Colombia, the open-pit heap-leach Santa Rosa Gold Mine in Panama, the La Libertad Gold Mine in Nicaragua and the San Andres Gold Mine in Honduras. Was a co-founder, director and VP of Eldorado, where he was involved in the Kisladag discovery in Turkey and La Colorada in Mexico. Subsequently, as President and/or CEO, has led companies exploring primarily in South America for the last twenty years, and since 1999 has been owner and President of Winfield Consulting. Joined the Platauro board as part of the July 2026 Mexican Gold Mining / Alcon Silver arrangement, having been a director of Alcon Silver Corp. Sources: orestone.ca/corporate/management/ and Platauro Metals' own arrangement-completion disclosure.