Currently, Nexa’s operations and material movements are carried out by diesel-powered mobile equipment. Most of this diesel comes from non-renewable sources, so the use of this fuel has a strong impact on CO2 emissions and significant operational costs.

There is an aim to seek innovative solutions at Nexa’s operations (Brazil and Peru) to reduce the impacts caused by this fuel, maintaining technical and economic viability. In addition to being aligned with the pillars of operational excellence and ESG, among others.

Nexa is seeking solutions to decrease diesel consumption in vehicles by at least 10%. Solutions may include electrification, biogas, hydrogen, biodiesl, or other technologies.

Decarbonisation solutions are sought in:

Underground Loaders:
Caterpillar R1300G, R1600G, R1600H, R1700, R2900G
Epiroc: ST-14, ST-10, ST-7
Sandvik: LH621, LH517

Articulated Haulers:
Volvo: A30G
Caterpillar: 735

Road Trucks
International: 7600, 9200
Freightliner: M2 112
Actros: 2651

The solutions should also consider:

• No impact to the warranty or useful life of engines.
  Harsh environments such as moisture, dust, vibration, high temperature and limited space.
• Strict compliance with the Nexa Resources safety code.
  Road transport distances ranging from 250 – 2,400km.
• Natural gas, hydrogen and methane are usually forbidden in underground mines. However, where the gas accumulation insignificant and there is almost no risk of explosion, it is permitted.
• Underground mines have limitations of network coverage.
  Refuelling or recharging times should not significantly impact truck cycles or production.
• Hydrogen, methane and other gases can only be used on demand, without gas accumulation.

1. Submission Period
   Suppliers are invited to submit their short-form solution to the challenge by 10th March 2023 for evaluation by Austmine and Nexa Resources.
2. Evaluation Period
   Shortlisted suppliers will be invited to a technical briefing, where each supplier will be able to gain more information about the challenge from Nexa Resources. This will allow you to refine your proposed solution prior to the next stage.
3. Pitch Session
   This is the opportunity to ‘sell’ your solution and gain feedback from operational teams, presenting directly to the Nexa Resources team.
4. Full Proposal Submission
   Following the Pitch Session, shortlisted suppliers are invited to submit their formal technical and economic proposals.
5. Winner Announced
   Nexa Resources will select the best fit solution/s for the challenge. Unsuccessful submitters are notified in writing by Austmine.

Challenge Launch Webinar
2nd February 2023

EOI Submission Deadline
10th March 2023

Technical Briefing
20th March 2023

Pitch Sessions
27th March 2023

Final Proposal Deadline
21st April 2023

The Global Mining Challenge is coordinated by Austmine and supported by the Australian Government Department of Industry, Science, Energy and Resources. The program provides new supply and export opportunities for opportunities for Australian METS companies and guides participants through a process of delivering solutions, technologies, and services to major international mining customers.