Orica Executive and Leadership Team

August, 2026

Leadership Overview

Orica has 10 executives leading key functions including strategy, operations, technology, finance, digital solutions, information systems, human resources, communications, and regional management.

Committed to sustainable resource mobilization, Orica delivers advanced blasting systems and specialty chemicals to global mining and infrastructure sectors while driving innovation through cutting-edge digital solutions.

Leadership Roles at Orica

  • Chief Executive Officer - Graeme Liebelt
  • Chief Financial Officer, Axis Mining Technology - Ailsa Miller
  • President, Orica Digital Solutions & Chief Technology Officer - Angus Melbourne
  • President (North America) - John Cooper
  • President - Specialty Mining Chemicals - Andrew Stewart
  • Chief of Staff - Renee Brennan
  • Vice President & Chief Technology Officer - Guolin Wang
  • Chief Information Officer (North America) - John Weiss
  • Chief People Officer - Sally Cox
  • Chief Communications Officer - Delphine Cassidy
  • Graeme Liebelt - Chief Executive Officer

    Graeme Liebelt, the Chief Executive Officer at Orica, directs the overarching strategic vision for the global mining and infrastructure solutions provider. The Chief Executive Officer manages the alignment of production, supply, and geotechnical monitoring services to ensure consistent market leadership. By overseeing the integration of specialty mining chemicals and blasting systems, Liebelt drives operational excellence across all international business units. This leadership role involves constant collaboration with the Board to maintain high standards of safety and sustainability. Graeme Liebelt monitors the execution of long-term growth initiatives, ensuring the company effectively mobilizes earth resources. Through rigorous oversight of corporate performance, the Chief Executive Officer secures the competitive position of the organization within the volatile global mining landscape. Liebelt prioritizes the delivery of value to stakeholders while maintaining a focus on technological advancement and operational efficiency across every continent.

    Ailsa Miller - Chief Financial Officer, Axis Mining Technology

    Ailsa Miller, the Chief Financial Officer, Axis Mining Technology at Orica, manages the financial health and fiscal strategy for the specialized technology division. The Chief Financial Officer, Axis Mining Technology oversees capital allocation, budgeting, and financial reporting to support the development of advanced mining solutions. By analyzing market trends and operational costs, Miller ensures that the division maintains profitability while investing in high-growth digital and geotechnical technologies. This role involves providing financial insights to the executive team to guide investment decisions in the mining sector. Ailsa Miller directs the financial planning processes that enable the scaling of innovative blasting systems. Through rigorous fiscal oversight, the Chief Financial Officer, Axis Mining Technology supports the company's broader mission of sustainable resource mobilization. Miller ensures that financial resources are deployed effectively to maximize returns and maintain the competitive edge of the technology portfolio.

    Angus Melbourne - President, Orica Digital Solutions & Chief Technology Officer

    Angus Melbourne, the President, Orica Digital Solutions & Chief Technology Officer at Orica, leads the digital transformation strategy and technical innovation agenda. The President, Orica Digital Solutions & Chief Technology Officer oversees the development of software and data-driven tools that optimize blasting and mining processes. By integrating digital solutions into the company's core service offerings, Melbourne enhances operational efficiency for clients across the globe. This role involves managing the intersection of hardware and software to provide comprehensive geotechnical monitoring and resource management. Angus Melbourne drives the adoption of new technologies that support sustainable mining practices. Through the leadership of the digital division, the President, Orica Digital Solutions & Chief Technology Officer ensures that the company remains a leader in the digital evolution of the mining industry. Melbourne focuses on delivering scalable digital platforms that improve safety and productivity for mining operations everywhere.
    Angus Melbourne

    John Cooper - President (North America)

    John Cooper, the President (North America) at Orica, directs all regional operations, including the supply of explosives and the delivery of mining services. The President (North America) oversees the execution of business strategies that support the company's market presence across the continent. By managing regional teams, Cooper ensures that clients receive high-quality blasting systems and geotechnical monitoring services. This role involves coordinating with global leadership to implement corporate initiatives while addressing the specific needs of the North American mining sector. John Cooper drives the growth of the regional business by optimizing supply chain logistics and service delivery. Through the management of regional operations, the President (North America) supports the company's broader mission of sustainable resource mobilization. Cooper focuses on maintaining operational safety and efficiency to ensure that the organization remains a preferred partner for mining and infrastructure projects in the region.

    Andrew Stewart - President - Specialty Mining Chemicals

    Andrew Stewart, the President - Specialty Mining Chemicals at Orica, leads the global business unit dedicated to the production and supply of specialty chemicals for the mining industry. The President - Specialty Mining Chemicals oversees the development and distribution of chemical solutions that enhance resource extraction efficiency. By managing the product lifecycle and market expansion, Stewart ensures that the division meets the evolving demands of global mining operations. This role involves collaborating with technical teams to innovate chemical applications that support sustainable mining practices. Andrew Stewart directs the strategic initiatives that drive revenue growth and market share for the specialty chemicals portfolio. Through the management of this critical business unit, the President - Specialty Mining Chemicals supports the company's overall mission of providing comprehensive mining solutions. Stewart focuses on delivering high-performance chemical products that improve productivity and safety for clients worldwide.
    Andrew Stewart

    Renee Brennan - Chief of Staff

    Renee Brennan, the Chief of Staff at Orica, coordinates executive workflows and facilitates communication between the leadership team and operational departments. The Chief of Staff manages the prioritization of strategic projects, ensuring that the organizational focus remains on the core mission of providing advanced blasting systems and mining chemicals. By streamlining internal processes, Brennan enhances the efficiency of the executive office. This role involves managing complex cross-functional initiatives that support the global supply chain and geotechnical monitoring services. Renee Brennan translates high-level corporate objectives into actionable tasks for various business units. Through the management of executive priorities, the Chief of Staff ensures that the company maintains a cohesive approach to market challenges. Brennan facilitates the rapid deployment of resources to meet the evolving needs of the mining industry, ultimately supporting the broader goal of sustainable resource mobilization.

    Guolin Wang - Vice President & Chief Technology Officer

    Guolin Wang, the Vice President & Chief Technology Officer at Orica, architects the technical roadmap for the development of next-generation blasting systems and specialty mining chemicals. The Vice President & Chief Technology Officer oversees research and development efforts to ensure the company remains at the forefront of mining technology. By driving innovation in geotechnical monitoring, Wang enhances the safety and productivity of mining operations worldwide. This leadership role involves managing technical teams to deliver cutting-edge solutions that address complex resource extraction challenges. Guolin Wang collaborates with other executives to integrate digital advancements into the existing product portfolio. Through the implementation of advanced engineering standards, the Vice President & Chief Technology Officer ensures that all technical outputs align with the company's commitment to sustainability. Wang maintains a focus on long-term technical viability, securing the organization's status as a premier provider of infrastructure solutions.

    John Weiss - Chief Information Officer (North America)

    John Weiss, the Chief Information Officer (North America) at Orica, directs the information technology infrastructure and digital security protocols across the North American region. The Chief Information Officer (North America) manages the deployment of enterprise systems that support the supply of explosives and specialty chemicals. By overseeing the digital backbone of regional operations, Weiss ensures that data integrity and system availability remain at peak levels. This role involves aligning IT initiatives with the company's broader goal of providing reliable mining and infrastructure solutions. John Weiss implements robust cybersecurity measures to protect critical operational data. Through the management of regional technology assets, the Chief Information Officer (North America) supports the efficiency of the supply chain and service delivery. Weiss ensures that the technological infrastructure in North America remains agile, secure, and capable of supporting the company's complex operational requirements.

    Sally Cox - Chief People Officer

    Sally Cox, the Chief People Officer at Orica, architects the human capital strategy to attract, develop, and retain top talent across the global organization. The Chief People Officer oversees organizational culture, talent management, and workforce planning to support the company's mission of sustainable resource mobilization. By implementing comprehensive training and development programs, Cox ensures that the workforce possesses the skills necessary to manage advanced blasting systems and mining chemicals. This role involves collaborating with other executives to foster an inclusive and high-performing environment. Sally Cox directs the initiatives that promote safety and operational excellence among employees. Through the management of human resources, the Chief People Officer supports the company's growth by ensuring that the right talent is positioned to drive innovation. Cox maintains a focus on employee engagement and organizational health to sustain long-term success in the mining and infrastructure sectors.

    Delphine Cassidy - Chief Communications Officer

    Delphine Cassidy, the Chief Communications Officer at Orica, manages the global reputation and external messaging for the mining and infrastructure solutions provider. The Chief Communications Officer oversees corporate communications, investor relations, and public affairs to ensure consistent alignment with the company's strategic goals. By crafting narratives that highlight the commitment to sustainable resource mobilization, Cassidy strengthens the brand's position in the global market. This role involves managing communication strategies that address the complexities of the mining industry and the impact of blasting systems and specialty chemicals. Delphine Cassidy directs the flow of information to stakeholders, ensuring transparency and trust. Through the management of corporate messaging, the Chief Communications Officer supports the company's efforts to engage with communities and partners. Cassidy ensures that the organization's values and achievements are effectively communicated to a diverse global audience.

    Frequently Asked Questions Regarding Orica Top Executives and Leadership Team

    Who leads Orica?
    Orica is led by Graeme Liebelt (Chief Executive Officer), along with executives such as Ailsa Miller (Chief Financial Officer, Axis Mining Technology) and Angus Melbourne (President, Orica Digital Solutions & Chief Technology Officer).
    Who is part of Orica’s executive team?
    The executive team of Orica includes leaders such as Graeme Liebelt (Chief Executive Officer), Ailsa Miller (Chief Financial Officer, Axis Mining Technology), Angus Melbourne (President, Orica Digital Solutions & Chief Technology Officer) and other senior executives.
    How many executives does Orica have?
    Orica has 10 executives leading key business areas.
    What roles are included in Orica’s leadership team?
    The leadership team of Orica includes roles such as Chief Executive Officer, Chief Financial Officer, Axis Mining Technology, President, Orica Digital Solutions & Chief Technology Officer, President (North America), President - Specialty Mining Chemicals.