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Job Field:
Engineering and Mineral Processing Jobs, Geosciences Jobs
Civil Engineer Jobs, Geotechnical Jobs, Underground Jobs, Geotechnical Engineer Jobs, Hydrogeologist Jobs, Hydrologist Jobs
Open pit, Underground
Indonesia, South East Asia
Contract Type:
Salary Description:
Relocation assistance/Ex-Pat incentives
Job Ref:

PTFI’s Grasberg operations consist of a number of world class mines that are targeted to produce some 240,000 tons of copper ore daily.  These include the Grasberg Open Pit, the DOZ panel cave and the Big Gossan open stope mine.  Equally important are the mines under development and study.  Development is well advanced at the GBC panel cave mine and the DMLZ panel cave mine and studies are being initiated for the Kucing Liar panel cave mine.  Current mine plans call for the Grasberg pit to be complete by 2018 at which time production will solely be from underground with production ramping up to some 240,000tpd by the middle of the next decade as GBC and DMLZ panel caves are brought on line.  The approximate CAPEX is in excess of $10b and when at full capacity Grasberg operations will be one of the largest underground operations in the world; delivering the future of PTFI.
The Hydrology group has a major role in the successful transition from open pit to underground; ensuring that the underground and open pit operations are effectively dewatered to be geotechnically. Site wide ARD management and water supply are another key tasks of the group to ensure Environmental compliance and uninterrupted water supply for the operations and communities. The work carried out by the group includes: hydrology data collection and analysis for both UG and surface, dewatering design and implementation, ARD management, hydrology modelling, consultants management and all the required reporting.
Additional responsibilities:
  • The Technical Expert Mine Hydrology role exists to ensure critical aspects of hydrology are undertaken “in-house”.  The intent of the role is provide:
    1. Core hydrology design skills
    2. Dewatering design and implementation
    3. Numerical modelling capability
    4. Strong analytical skills in data analysis and visualization
•             Provide expert advice to ensure that best practice hydrogeological knowledge is applied.
•             Provide expert advice to ensure that appropriate analyses are undertaken.  Analysis will range from numerical modelling to the development of analytical tools to assist in dewatering performance
•             Develop and coach national staff to build capacity, ensure knowledge transfer and that analyses follow international best practices 
•             Provide professional advice/recommendations to PTFI leadership and supervisory staff 
•             Understand and be aware of safety and environmental practices in the various work areas to ensure safe work practices for you and your colleagues in compliance with company Safety and Environmental SOPs 
•             Assist in the development of the Hydrology group that provides key technical advice and support to Grasberg and Underground Operations
•             Technical work for the Open Pit, DOZ, DMLZ and GBC caving operations and for the Big Gossan stopping operation all within PTFI’s Grasberg business unit
•             Assist in the development of partnering arrangements with key specialist providers, such as numerical modelling
•             Assist in mentoring program for national hydrogeologists
•             Reporting to Manager Civil Geotech & Regional Hydrology
•             Collaborative and influencing functional peer relationships with hydrology teams within PTFI’s underground projects and open pit operations: 
•             Collaboration with open pit and underground operations
•             Close alignment with Engineering, Geology and Operations to achieve common goals


  • Bachelor’s Degree (S1) in Hydrogeology, Geological Engineering or acceptable Tertiary qualifications with at least fifteen (15) years working experience in the application of hydrogeology to underground and open pit mining
  • Demonstrated expertise in advance hydrology analysis and numerical modelling applied to underground and open pit mining
  • Demonstrated ability to work with others and communicate complex issues
  • Highly focused on hydrology analysis and design as applied to open pit and underground mining.  This requires and in depth knowledge of hydrogeology and knowledge of advanced numerical modelling/analytical techniques.
  • Ability to perform in-depth analysis of complex hydrogeological issues and convey the results to senior management
  • Ability to develop preventive actions as opposed to corrective actions
  • Strong supervisory and leadership skills
  • Strong analytical thinking skills
  • Ability to work in a culturally diversified workforce
  • Strong computer skills
  • Strong English skills, both oral and written
  • Strong negotiation skills
  • High level communication and presentation skills
Preferred Qualifications
  • Basic level of the Indonesian language in understanding and oral (preferable but not essential)
  • Copper Overseas Service Company ("COSCO") promotes a drug/ alcohol free work environment through the use of mandatory pre-employment drug testing and on-going random drug testing as per applicable Company Standards
COSCO has reviewed the jobs at its various office and operating sites and determined that many of these jobs include tasks or duties that could affect the safety or health of the employees performing these tasks or others. Accordingly, the Company has designated the following positions as safety-sensitive:
  • Positions within COSCO which are held by employees who receive Safety Training; or
  • Positions within COSCO which are held by employees who operate equipment or motor vehicles in furtherance of performing their COSCO job duties, including operating motor vehicles while on Company business or travel (for this purpose “motor vehicles” includes Company owned or leased motor vehicles and personal motor vehicles used by employees in furtherance of Company business or while on Company travel)
Benefits: Begin first day of employment
  • Medical, Dental and Vision Insurance
  • Relocation assistance/Ex-Pat incentives
COSCO is an equal opportunity, affirmative action employer

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Technical Expert, Mine Hydrology

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