Orica Executive and Leadership Team

July, 2026

Leadership Overview

Orica has 10 executives leading key functions including strategy, finance, technology, and operations.

Driven by innovation, Orica is dedicated to sustainably mobilizing the earth's resources through cutting-edge solutions and services for the mining and infrastructure sectors.

Leadership Roles at Orica

  • Chief Executive Officer - Graeme Liebelt
  • Chief Financial Officer - James Crough
  • Chief Financial Officer, Axis Mining Technology - Ailsa Miller
  • President, Orica Digital Solutions & Chief Technology Officer - Angus Melbourne
  • Chief of Staff - Renee Brennan
  • Chief Information Officer (North America) - John Weiss
  • Vice President & Chief Technology Officer - Guolin Wang
  • Chief People Officer - Sally Cox
  • Chief Communications Officer - Delphine Cassidy
  • Senior Manager, Commercial - James Tiedgen
  • Graeme Liebelt - Chief Executive Officer

    Graeme Liebelt, the Chief Executive Officer at Orica, directs the company's global strategy and operational execution. Liebelt oversees all business units, ensuring alignment with Orica's mission to sustainably mobilize the earth's resources. This leadership role involves driving innovation across explosives, blasting systems, specialty chemicals, and digital solutions. By focusing on market leadership and operational excellence, Graeme Liebelt ensures Orica maintains its position as a premier provider for the mining and infrastructure industries. The Chief Executive Officer's purview extends to fostering strategic partnerships and guiding the company through evolving market dynamics, ultimately securing long-term growth and shareholder value.

    James Crough - Chief Financial Officer

    James Crough, the Chief Financial Officer at Orica, manages the company's financial health and strategic fiscal planning. Crough directs all financial operations, including accounting, treasury, and investor relations, ensuring robust financial governance. This critical role involves optimizing capital allocation and driving financial performance across Orica's diverse product and service offerings. By implementing rigorous financial controls and identifying growth opportunities, James Crough supports the company's objective to sustainably mobilize the earth's resources. The Chief Financial Officer's strategic insights are essential for navigating market complexities and ensuring the financial stability required for Orica's global operations.

    Ailsa Miller - Chief Financial Officer, Axis Mining Technology

    Ailsa Miller, the Chief Financial Officer, Axis Mining Technology at Orica, directs the financial strategy and operations for Orica's specialized mining technology division. Miller oversees all fiscal activities, including budgeting, forecasting, and financial reporting, ensuring the division's profitability and growth. This role is integral to supporting the broader company objective of sustainably mobilizing the earth's resources by providing financial oversight for technological advancements. By managing financial resources effectively, Ailsa Miller enables Axis Mining Technology to deliver innovative solutions to the mining industry. The Chief Financial Officer's expertise is vital for driving financial discipline and strategic investment within this key business unit.

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

    Angus Melbourne, the President, Orica Digital Solutions & Chief Technology Officer at Orica, spearheads the development and deployment of cutting-edge digital technologies. Melbourne leads the innovation pipeline for Orica's digital solutions, driving advancements in data analytics, automation, and connectivity for the mining and infrastructure sectors. This dual role ensures technological strategy directly supports the company's mission to sustainably mobilize the earth's resources. By integrating advanced technology with Orica's core offerings, Angus Melbourne enhances operational efficiency and customer value. The Chief Technology Officer's vision is crucial for maintaining Orica's competitive edge through technological leadership.
    Angus Melbourne

    Renee Brennan - Chief of Staff

    Renee Brennan, the Chief of Staff at Orica, facilitates strategic initiatives and enhances operational efficiency across the executive leadership team. Brennan coordinates cross-functional projects, ensuring seamless execution of Orica's mission to sustainably mobilize the earth's resources. This position involves managing key stakeholder communications and driving critical organizational priorities. By streamlining processes and fostering collaboration, Renee Brennan supports the Chief Executive Officer and the broader leadership in achieving strategic objectives. The Chief of Staff's role is pivotal in translating high-level strategy into actionable plans, ensuring Orica's continued leadership in mining and infrastructure solutions.

    John Weiss - Chief Information Officer (North America)

    John Weiss, the Chief Information Officer (North America) at Orica, leads the information technology strategy and operations across the North American region. Weiss ensures the robust and secure deployment of IT infrastructure, supporting Orica's global operations and its mission to sustainably mobilize the earth's resources. This position involves managing all aspects of technology services, from network management to cybersecurity, tailored to regional needs. By optimizing IT systems, John Weiss enhances operational efficiency and data integrity for Orica's North American business units. The Chief Information Officer's leadership is essential for leveraging technology to drive business outcomes and maintain a competitive advantage.

    Guolin Wang - Vice President & Chief Technology Officer

    Guolin Wang, the Vice President & Chief Technology Officer at Orica, drives technological innovation and research and development initiatives. Wang focuses on advancing Orica's product and service portfolio, ensuring alignment with the company's commitment to sustainably mobilize the earth's resources. This leadership role involves exploring new technological frontiers and enhancing existing solutions for the mining and infrastructure sectors. By fostering a culture of innovation, Guolin Wang contributes significantly to Orica's technological leadership and market competitiveness. The Chief Technology Officer's strategic direction is key to developing next-generation solutions that meet evolving industry demands.

    Sally Cox - Chief People Officer

    Sally Cox, the Chief People Officer at Orica, directs the human resources strategy and talent management initiatives across the organization. Cox oversees all aspects of employee relations, organizational development, and workforce planning, ensuring Orica cultivates a high-performing and engaged workforce. This role is fundamental to supporting the company's mission to sustainably mobilize the earth's resources by attracting, developing, and retaining top talent. By championing a positive workplace culture and implementing effective people strategies, Sally Cox enhances Orica's operational capabilities. The Chief People Officer's focus on human capital is critical for driving business success and fostering innovation.

    Delphine Cassidy - Chief Communications Officer

    Delphine Cassidy, the Chief Communications Officer at Orica, leads the company's corporate communications and public relations strategies. Cassidy manages all external and internal messaging, ensuring clear and consistent communication of Orica's mission to sustainably mobilize the earth's resources. This position involves shaping the company's brand narrative and managing stakeholder engagement across diverse platforms. By enhancing Orica's reputation and fostering strong relationships with media and the public, Delphine Cassidy supports strategic business objectives. The Chief Communications Officer's expertise is vital for building trust and maintaining Orica's leadership presence in the global market.

    James Tiedgen - Senior Manager, Commercial

    James Tiedgen, the Senior Manager, Commercial at Orica, drives commercial strategy and business development initiatives. Tiedgen focuses on identifying and capitalizing on market opportunities, ensuring Orica's continued growth and leadership in providing mining and infrastructure solutions. This role involves managing key client relationships and optimizing commercial operations to support the company's mission to sustainably mobilize the earth's resources. By developing and executing effective commercial plans, James Tiedgen contributes directly to revenue generation and market expansion. The Senior Manager, Commercial's strategic acumen is essential for navigating competitive landscapes and securing long-term business success.

    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 James Crough (Chief Financial Officer) and Ailsa Miller (Chief Financial Officer, Axis Mining Technology).
    Who is part of Orica’s executive team?
    The executive team of Orica includes leaders such as Graeme Liebelt (Chief Executive Officer), James Crough (Chief Financial Officer), Ailsa Miller (Chief Financial Officer, Axis Mining Technology) 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, Chief Financial Officer, Axis Mining Technology, President, Orica Digital Solutions & Chief Technology Officer, Chief of Staff.