Summary
Overview
Work History
Education
Skills
Certification
Timeline
Personal Information
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ONYEDIKA EZEJELUE

Armadale,WA

Summary

Mining engineer with foundational knowledge in Mining and process Engineering and hands-on experience gained through academic projects, internships, and close to 2yrs experience under the mine production engineering section. Over 4 years of experience across the oil and gas drilling services industry as a maintenance engineer.

Demonstrates strong teamwork, problem-solving, and time-management skills. Presently completing my required underground operator time experience and assists senior mine production engineers, sometimes acts as a production engineer when needed. Prepared to move to the next level in my career and make meaningful contributions with commitment and drive. Have built skills and competencies such as excellent communication, time management, reliability, teamwork, problem-solving, technical aptitude, mining engineering fundamentals, Mine production engineering, and process engineering. Eager to learn and adapt, committed to blending foundational engineering skills with cutting-edge mining skills and practices to drive results and contribute to the team's overall goals.

Overview

7
7
years of professional experience
1
1
Certification

Work History

UNDERGROUND GRADUATE MINING ENGINEER

Black-Cat Syndicate Ltd
Perth, WA
02.2026 - Current

Completing Required Underground Operator time to Qualify for FCMM-Certificate with duties:

Ø Trucking, Nippering, Long-Hole drilling, Charge-up, Service Crew and Ventilation Surveys.

Ø Covering as Mine Production Engineer occasionally as Requested by Underground Manager.

UNDERGROUND MINING OPERATOR

Black-Cat Syndicate Ltd,
Perth, WA
09.2025 - 01.2026

Completing Required Underground Operator time to Qualify for FCMM-Certificate with duties:

  • Trucking, Nippering, Long-Hole drilling, Charge-up, Service Crew and Ventilation Surveys.
  • Covering as Mine Production Engineer occasionally as Requested by Underground Manager

Mining Engineer (Graduate)

Westgold Resources Ltd
Perth, WA
01.2025 - 09.2025
  • Daily Mine Operations Report
  • Drill and blast plans designs
  • Production stope blast Timing Plans, Logging and Firing.
  • Tele-remote plans and Stope reconciliation reports.
  • Short term(3-day) production scheduling planning
    Primary and Secondary Underground Ventilation Surveys.
  • Collaborating with geologists to analyze geological data, resulting in accurate mine planning.
  • Providing technical support during construction phases of underground mining infrastructure installations that resulted in faster overall project progress timelines.
  • Streamlined communication between departments by establishing clear reporting lines and information sharing protocols.

Student Engineer

Westgold Resources
Perth, WA
08.2024 - 12.2024
  • Prepare and Summarise daily BetaHunt Mine Operations Report, and timely distribution to approved recipients.
  • Design of production blast charge plans, timing and primer coordinates and pre-post blast plans using DESWIK software.
  • Drafting of Tele-remote bogging plans.
  • Prepare and update of fired stope reconciliation reports.
  • Daily update of magazine usage register, forecasting of magazine usage and timely ordering of Magazine and detonators.
  • Daily tracking of production drilling meters and update of drill and blast register.
  • Drafted the modern Betahunt watering and dewatering schematics.

Student Mining Engineer

KARORA RESOURCES
Kambalda, Western Australia
01.2024 - 07.2024
  • Summarizing and completing General Mine Operations Daily Report
  • Monitoring, estimating, and ordering mine production Explosives
  • Preparing production prep-plans for drilling crew
  • Designing drill and blast/timing plans using Deswik-CAD software
  • Assisting Senior engineers to perform ventilation surveys
  • Prepare Tele-Remote plans for stope Remote bogging operations
  • Improved mine safety by implementing advanced monitoring systems and conducting regular risk assessments.
  • Increased ore extraction efficiency with the development of innovative mining techniques and equipment optimization.
  • Conducted surveys and devised drawings of mine layouts to prepare for mining operations.

Maintenance Engineer

Halliburton Energy Services Nigeria Ltd
Portharcourt,Nigeria
10.2019 - 08.2022
  • Planning and undertaking scheduled maintenance on directional drilling tools.
  • Performed detailed preventive maintenance analysis on the main ELECTRO-CHEMICAL subcomponent of the rotary steerable power unit sub-assembly which is powered by Lithium-ion batteries, and develop the turn-around schedule, load tests Lithium battery Cells and installs them onto the power section of the Geo-pilot assembly.
  • Plan and rebuild the hydraulic-mechanical section of the power-unit, piston chamber seal tests and bearings integrity testing.
  • Performed chemical safety checks on the Geo-pilot tool oil (Mobil SHC 630,636,639) and oil fills the Geo-pilot tool.
  • Performed routine safety check on the lithium batteries to check for venting, and package and handle vented batteries to avoid environmental hazards from the possible vented lithium batteries.
  • Conducted Emergency battery safety drills for the team on handling vented Lithium batteries.
  • Create equipment repair and maintenance work orders and part changes using SAP data/inventory management tool.

APPLICATION ENGINEER, Managed Pressure Drilling.

Theo-Tech Services Ltd (Third Party to Halliburton)
Portharcourt,Nigeria.
09.2018 - 09.2019
  • Organized and oversee all aspects of rig-up, operation and maintenance of units, tools and equipment involved in Managed pressure drilling projects at the rig site and operations base.
  • Prepared Process flow diagrams (PFD’s) and process instrumentation diagrams (P&ID’s) used in rigging-up the MPD system set-up.
  • Designed Managed pressure drilling program for each drilling operation in compliance with Quality, Health, Safety and Environment procedures and guidelines.
  • Prepared and documented daily Managed Pressure Drilling (MPD) operations report, post MPD analysis and lessons learnt for process optimization, continuous improvement advises to management.
  • Worked closely with clients, rig contractor and other critical service providers in developing drilling operations engineering feasibility study needed to safely execute High Pressure High Temperature (HPHT) well drilling program.
  • Liaised with other service providers and vendors in the rig-site and base to ensure service quality delivery and successful project operations withing estimated timelines.
  • Provided technical support to clients in relation to using MPD system and help troubleshoot and fix any possible system challenges during MPD operations.
  • Provided technical Support to Rotating Control Device (RCD) Operators rigging up the RCD on top of the BOP.

Education

Master of Science - Mining Engineering

Western Australia School of Mines (WASM), Curtin University
Kalgoorlie, WA
11.2024

Bachelor of Science - Chemical Engineering

Federal University of Technology Owerri
Owerri, Nigeria
11.2012

Skills

  • Microsoft Office Suite
  • UGDB Deswik CAD Proficient/superior user
  • Auto-Cad P&ID
  • Mine Planning
  • SAP Maintenance Planner Software
  • UG Ventilation Primary and Secondary Survey experienced
  • Underground mining operations experience
  • Drill and Blast Design proficient
  • UG Geotechnical operational basics competent
  • Production scheduling proficient
  • Rock mechanics

Certification

  • Western Australian full Class C driver’s license
  • DESWIK UGDB For Underground Metals, Deswik Mining Consultants(Australia) Pty Ltd, 03/01/24
  • DESWIK CAD Essentials, Deswik Mining Consultants(Australia) Pty Ltd, 02/01/24
  • CONFINED SPACE, WORK AT HEIGHT AND GAS TEST ATM, License for work Australia, 01/01/23
  • Quality Management System Certified, Halliburton, Port Harcourt, 08/01/15 - 10/31/15
  • SAP DATA MANAGEMENT SOFTWARE Training, Halliburton Nigeria internal Training, 01/01/15 - 07/31/15

Timeline

UNDERGROUND GRADUATE MINING ENGINEER

Black-Cat Syndicate Ltd
02.2026 - Current

UNDERGROUND MINING OPERATOR

Black-Cat Syndicate Ltd,
09.2025 - 01.2026

Mining Engineer (Graduate)

Westgold Resources Ltd
01.2025 - 09.2025

Student Engineer

Westgold Resources
08.2024 - 12.2024

Student Mining Engineer

KARORA RESOURCES
01.2024 - 07.2024

Maintenance Engineer

Halliburton Energy Services Nigeria Ltd
10.2019 - 08.2022

APPLICATION ENGINEER, Managed Pressure Drilling.

Theo-Tech Services Ltd (Third Party to Halliburton)
09.2018 - 09.2019

Bachelor of Science - Chemical Engineering

Federal University of Technology Owerri

Master of Science - Mining Engineering

Western Australia School of Mines (WASM), Curtin University

Personal Information

ONYEDIKA EZEJELUE