# Jason McCallum Managing Director Surface Mining Australia ## Career chronology - **Joined Macmahon in June 2023 and became managing director, surface mining Australia in October 2024; issuer reports earlier BHP, Vale Coal and Yancoal roles.: Macmahon Holdings Limited** — Managing Director Surface Mining Australia. [Annual Report FY2026]() (physical PDF p. 44, executive biography) ## Education and qualifications ### Qualifications and verification [mah_mccallum_education] Education dates not established · issuer reported · low materiality Independent professional and education credentials were not identified in the issuer biography. **Attribution:** Responsibility not applicable. Issuer or professional biography reports qualifications; no direct independent verification is implied. **Relevance:** Relevant to assessing professional preparation. [Annual Report FY2026]() (physical PDF p. 44, executive biography) ## Suitability for the current role ### Role-relevant professional experience [mah_mccallum_role_fit] Through 2026-10-31 · analyst inference · low materiality As an analytical inference, the reported experience is relevant to managing director surface mining australia: Joined Macmahon in June 2023 and became managing director, surface mining Australia in October 2024; issuer reports earlier BHP, Vale Coal and Yancoal roles. The degree of individual contribution to past company outcomes is not established. **Attribution:** Responsibility not applicable. Analytical assessment based on disclosed career; it is not a finding of personal delivery or misconduct. **Relevance:** Matches documented experience to the role. [Annual Report FY2026]() (physical PDF p. 44, executive biography) ## Evidence gaps - Independent verification of education, credential status, full prior-employer tenures and individual outcomes is incomplete. - Focused public-source screening is not a comprehensive court, regulatory, criminal, sanctions or credential check; some historical employer records and local-language sources were not reviewed.