JESUS CORPUZ
CORE CUTTER | CORE TECHNICIAN | GEOTECHNICAL TECHNICIAN
Hamilton
Summary
Experienced Core Technician and Geotechnical Professional with over 35 years of hands-on experience in gold exploration, diamond drilling programs, core handling, cutting, logging, QA/QC, and geotechnical inspections. Extensive background in underground and open-pit mining environments with strong expertise in oriented core, RQD measurement, structural logging, and sample preparation. Proven commitment to safety, environmental responsibility, and teamwork. Physically fit, highly organized, and detail-oriented with experience working directly with geologists and engineers in active exploration projects.
Overview
38
38
years of professional experience
Work History
Ground Support Consultant
Delta Earth Moving Inc. – OceanaGold Philippines Inc.
05.2022 - 08.2023
- Reported directly to the Senior Geotechnical Engineer.
- Handled diamond drilling core programs including core orientation verification, RQD measurement, and structural logging.
- Conducted geotechnical logging and interval logging.
- Ensured accurate recording of geological and geotechnical data in Microsoft Excel databases.
- Conducted rock bolt pull testing and geotechnical inspections.
- Maintained strong safety compliance in active mining environments.
Underground Mine Shift Supervisor
Benguet Corporation
10.2019 - 05.2022
- Supervised underground mining crews and ensured compliance with safety and environmental standards.
- Inspected ground conditions and ensured proper ground support installation.
- Coordinated daily production activities and communicated with engineers and geologists.
- Maintained organized reporting and documentation systems.
Senior Geotechnician
OceanaGoldPhilippines Inc.
07.2013 - 04.2018
- Reported directly to Senior Geologists and Geotechnical Engineers.
- Opened, organized, and managed drill core boxes for logging and storage.
- Measured RQD and core recovery and marked orientation lines on oriented core.
- Logged diamond drill core using standard geological terminology.
- Prepared and tagged samples for laboratory analysis.
- Conducted structural mapping and geotechnical inspections.
- Assisted in downhole surveys and maintained QA/QC standards.
- Entered all borehole data into company database systems accurately and efficiently.
Geological Field Assistant
ExplorationDepartment - Saudi Arabian Mining Co.
05.2003 - 07.2012
- Collected, labeled, and prepared geological samples.
- Assisted in drilling supervision and ensured contractor compliance.
- Conducted mapping, sampling, and geological data recording.
- Managed field logistics and maintained organized sample storage.
Grade Control Supervisor/Inspector
Republic AggregatesCo.Inc.
10.1997 - 07.2002
- Supervising ore digs. Implement dig plans showing grade and type categories.
- Ensuring that materials goes to appropriate stockpiles Lay out patterns for blast holes and exploratory holes. Sampling of blast holes. Delineate ore and waste by marked-out color-coded flagging. Responsible for the computations of mine grades based on samples assay results.
Grade Control Inspector
AntamocMines - OpenPitDivision
12.1992 - 09.1997
- Computes sample grade based on assay values and delineates mineable ore by marked-out color-coded flaggings.
- Supervising ore digs.
- Assist open pit sampler on priority sampling locations.
- Monitor ore delivery to dump pocket.
Geological Mapper
AntamocMines - OpenPit Division
12.1992 - 09.1997
- Responsiblefordaily bench mapping of open pit advances.
- Assist openpitsamplers on priority sampling locations.
- Plotting ofgeology and assay to bench plan.
- Capturingallgeological data using standard procedure and producing a legible and neat presentationofthe feature mapped.
- Prepare dailysampling results for calculation.
Sampler/Draftsman
Balatoc Mine– Exploration Division
04.1985 - 04.1988
- Responsible for accurate sampling layout of channel cuts.
- Makes sure that the channel cut samples should be taken by chipping channels according to the specified width and depth across the strike of the vein structure and that all samples must be of the correct particle size and quantity or weight.
- Makes sure that all samples are properly tagged, identified, and recorded according to location or source as well as the corresponding geological descriptions.
- Drafting of geology maps and assays.
Education
Bachelor of Science in Architecture - Architecture (Undergraduate)
Baguio Colleges Foundation
High School Diploma -
Baguio Colleges Foundation
Skills
- Diamond Drill Core Handling and Cutting- Core Box Organization and Storage Management- Oriented Core Marking and Orientation Line Verification- RQD Measurement and Core Recovery Calculation- QA/QC Procedures and Data Recording- Geotechnical and Structural Logging- Magnetic Susceptibility and Geological Sampling- Rock Saw Operation and Maintenance- Sample Bagging, Tagging, and Preparation for Laboratory Shipment- Core Yard Mapping and Storage Management- GIS Data Support and Database Entry- Ground Support Inspection and Installation- Health, Safety and Environmental Compliance- Ability to Lift 50 lbs Regularly- Valid Driver’s License
Additional Information
- Geological Mapper
- Grade Control Inspector
- Grade Control Supervisor
Timeline
Ground Support Consultant
Delta Earth Moving Inc. – OceanaGold Philippines Inc.
05.2022 - 08.2023
Underground Mine Shift Supervisor
Benguet Corporation
10.2019 - 05.2022
Senior Geotechnician
OceanaGoldPhilippines Inc.
07.2013 - 04.2018
Geological Field Assistant
ExplorationDepartment - Saudi Arabian Mining Co.
05.2003 - 07.2012
Grade Control Supervisor/Inspector
Republic AggregatesCo.Inc.
10.1997 - 07.2002
Grade Control Inspector
AntamocMines - OpenPitDivision
12.1992 - 09.1997
Geological Mapper
AntamocMines - OpenPit Division
12.1992 - 09.1997
Sampler/Draftsman
Balatoc Mine– Exploration Division
04.1985 - 04.1988
Bachelor of Science in Architecture - Architecture (Undergraduate)
Baguio Colleges Foundation
High School Diploma -
Baguio Colleges Foundation