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Study Lead, Processing - Clark

Date: Nov 19, 2021

Location: Tucson, AZ, US, 85719

Company: South32 Group Operations Pty. Ltd.

About South32

South32 is a globally diversified mining and metals company. Our purpose is to make a difference by developing natural resources, improving people’s lives now and for generations to come. We are trusted by our owners and partners to realise the potential of their resources. We produce bauxite, alumina, aluminium, metallurgical coal, manganese, nickel, silver, lead and zinc at our operations in Australia, Southern Africa and South America. With a focus on growing our base metals exposure, we also have two development options in North America and several partnerships with junior explorers around the world.


Following the acquisition of Arizona Mining, South32 is the new owner of the Hermosa Project, a high-grade zinc, lead and silver development option in Arizona.


South32's purpose is to make a difference by developing natural resources, improving people's lives now and for generations to come. We work closely with their host communities to create enduring social and economic value through local employment, infrastructure and facilities development and community investment programs.


The location of this role is the Tucson, Arizona office or the Vancouver, B.C. office.


The Role

The Study Lead – Processing is responsible for developing and optimizing flowsheet for the production of manganese specialty battery product, zinc, and silver for the Hermosa Project’s Clark Deposit.  The incumbent will also be responsible for developing the process engineering work to a Pre-Feasibility Study level on to detailed engineering and construction.



  • Lead the metallurgical development of the proposed Hermosa Clark manganese, zinc, and silver production facilities;
  • Facilitate and organize assessment of current metallurgical test work data and trends and assist in developing and managing ongoing metallurgical development plans;
  • Partners with the geology team to understand the geo-metallurgy characteristics of the ore body, develop a geo-metallurgical model, and determine how to respond and maximize value;
  • Support and review modeling and simulation of the proposed flowsheet configuration;
  • Partners with the Technology department to identify and implement appropriate technologies for managing and optimizing operation and generating value for the business;
  • Develop CAPEX and OPEX budget assumptions for the Processing department related to studies associated with the Clark deposit;
  • Lead and organize trade-off studies to identify the best path forward to maximize project value;
  • Ability to travel to external laboratory facilities to verify and validate trade-off study data and assumptions regularly. 


Qualifications and Experience

  • Bachelor’s degree in Metallurgical/Chemical/Process Engineering (or similar Engineering field); master’s degree would be considered an asset;
  • Thorough knowledge of mine safety practices, demonstrated ability to maintain safety awareness, and visible field safety leadership;
  • Ability to supervise and direct others consistently and professionally;
  • Excellent organizational and communication skills;
  • High standards of professional and ethical conduct;
  • Ability to work under pressure, maintain composure, set priorities, and work with a myriad of personalities and diverse work cultures;
  • Strong English language, written and verbal, communication skills;
  • Ability to read technical drawings (PFDs, P&IDs, mechanical, electrical, etc.) is preferred;
  • Hydrometallurgical expertise – electrowinning expertise will be considered as an asset;
  • Working knowledge of Microsoft Office products – Word/Excel/Outlook/etc.;
  • Ten (10) years of experience in a similar role;
  • Experience in extractive metallurgy facilities within Base Metals with an emphasis on manganese and zinc;
  • Proven experience and knowledge of comminution and leaching processes;
  • Proven experience in development and utilization of modeling and simulation for hydrometallurgical plants;
  • Previous geo-metallurgy experience is preferred;
  • Experience with studies (concept, pre-feasibility, and feasibility) and stage-gate processes is preferred.


Our Culture

At South32, our people are fundamental to our success. We're focused on creating an inclusive workplace, with the right people in the right roles, who are engaged, empowered and appropriately rewarded.


We aspire to be an inclusive organization, where our workforce reflects the broader demographic of the countries and communities where we operate.


South32 embraces diversity and encourages applications from people of all backgrounds.


Nearest Major Market: Tucson