Gustavo Kiefer

43 years old with 18 years' experience in Mineral Exploration and Prospecting, Geological Database & QA/QC and pre-feasibility, feasibility, engineering projects development. Specialized in planning exploration and prospection programs for Potash (evaporites basins), Base Metals, Gold, Graphite, and Iron Ore. Expertise in management and planning of successful mineral exploration campaigns, oversight and management of effective use of data and appropriate application of technologies to promote Regional Exploration Campaigns.

Proficient in Database Management (geology, geochemistry, geophysics, drilling, topography, GIS databases); Exploratory Data Analysis (EDA); supervision of assays routines and QAQC protocols. Knowledgeable in Standards of Disclosure for Mineral Projects according to NI 43-101, JORC, and SK-1300.

Exploration Manager - Ore Investments - Brazil

(2023)

Ore Investments is an independent private equity investment fund manager founded and managed by Brazilians, focused on mining investments in Brazil, which combines long-term capital with in-depth technical, managerial and financial knowledge. Strongly involved in technical full due diligences assessments in selecting opportunities for the group, with incorporation of several successful cases into the company's portfolio. The company has diversified investments in Gold, Titanium and Vanadium, Phosphate, Base Metals (Cu, Pb, Zn and Ag), among others.

Founding Partner and Director Geology - New Mining Mineração Ltda. / Graph +s Mineração Ltda. - Bahia-Minas Graphite Province, Brazil

(2020)

Since 2020 has been executing an aggressive mineral exploration program for graphite in several targets throughout the Bahia-Minas Graphite Province. MRE (NI-43101, PEA, Jan 2025): Inf: 25.7 Mt @ 2,73% Cg.

• Definition of Regional Exploration Campaigns throughout the Bahia-Minas Graphite Province
• Identification, selection and ranking of Exploration Targets (Graphite Potential Mineralization)
• Definition and monitoring regional and detailed exploratory drilling programs
• Elaboration of QAQC protocols and contracting chemical analysis packages for graphitic carbon (Leco Total Analyzer and infrared detection of high temperature combustion)
• Definition and contracting of terrestrial geophysics surveys (Time Domain Induced Polarization (IP) Survey and dipole-dipole arrangement – Chargeability/Resistivity 2D Sections and 3D Voxel Models)

Senior Geologist - Forbes & Manhattan Brasil / Brazil Potash Corp. (Potássio do Brasil Ltda.) - Amazonas Basin, Brazil

(2009 - 2023)

Amazonas Potash Project. Involved in all company's works since first exploration activities with exploration targets generation and drilling campaigns that culminated in the discovery of the Autazes Deposit, besides the promising targets: Itapiranga, Novo Remanso and Itacoatiara in the Amazonas Basin, Brazil. From 2009 to 2023 closely worked with engineering teams in supporting tasks for the Bankable Feasibility Studies – BFS (FEL1/2), for the Autazes Potash and Salt Project (Green Field Project: Underground Mine).

• Geotech/Geomechanical test works
• Hydrogeological test works
• Waste Tailing Management Areas
• Mineral Rights
• 3D Stratigraphic Model
• Mineral Resource Estimates
• Mine Plan
• Metallurgical test works
• Environmental Licensing
• Support, monitoring and revisions to independent consultants for Technical Reports: NI 43.101 - Bankable Feasibility Study (Worley Parsons, 2016); NI 43.101 - Bankable Feasibility Study (Ercosplan, 2022); SK 1300 - Bankable Feasibility Study (Ercosplan, 2022)

Geotechnical Geologist - Leme Engenharia (GDF SUEZ GROUP) - Rondônia, Brazil

(2008 - 2009)

Jirau Hydropower Project - geotechnical works

Exploration Geologist - Castillian Resources Corp. - Goias, Brazil / Argentina / Tanzania

(2008 - 2008)

Work in the Mangabal Nickel Project, Goias, Brazil. Also supported exploration activities in the other projects: Las Aguilas Nickel Project, San Luis, Argentina and Kabanga Project, Tanzania.

Trainee - VALE - Iron Quadrangle, Brazil

(2006 - 2007)

Regional Iron Projects - Regional Iron Projects in the Iron Quadrangle Province, Brazil

• Detailed geological mapping
• Drilling schedules
• Geochemical sampling

M.Sc. - Regional Geology - Federal University of Minas Gerais (UFMG) (2019 - 2019)

B.Sc. - Geology - Federal University of Minas Gerais (UFMG) (2008 - 2008)