Our Leadership Team

At Wallis, our people have a wealth of knowledge and experience in the industry.

Graeme Wallis

Managing Director

Graeme has been Managing Director since 1980 and is responsible for all aspects of Wallis Drilling. He spent 5 years in the finance industry and since then he has been with the company for over 40 years.

Relevant Qualifications & Memberships

  • Member of Institute of Company Directors.
  • Life membership of both Australian Drilling Industry Association and Mineral Drilling Association of Australia

Mark Crumby

Chief Executive Officer

Mark joined Wallis in 2009 following ten years in executive roles at the ANZ Banking Group.

Relevant Qualifications & Memberships

  • Masters of Business Administration
  • Graduate of the Australian Institute of Company Directors
  • Member of the Australian Institute of Directors

Nigel Cottrill

Chief Financial Officer

Nigel joined Wallis as an accountant in 2000. In 2008 he transitioned to CFO.

Relevant Qualifications & Memberships

  • Bachelor of Business from Edith Cowan University
  • The Tax Institute

Grant Wallis

Drilling Manager - Iron Ore & Mine Services

Grant has more than 17 years experience with Wallis Drilling in management roles. He manages the RC drilling and Grade Control & Blast drilling services.

Relevant Qualifications & Memberships

  • Bachelor of Business from Edith Cowan University
  • Frontline Drilling Management
  • Graduate of the Australian Institute of Company Directors
  • Australian Drilling Industry Association (ADIA)

Kim Wallis

Drilling Manager - Exploration & International

Kim has more than nine years experience with Wallis Drilling. Prior to joining the Company, he worked with in the IT industry for a tier one stockbroking and law firm.

Brendan Moran

Engineering & Maintenance Manager

Brendan joined Wallis in 1986 as a tradesperson. In 1993 he became maintenance supervisor and transitioned to his current role in 1998.

Relevant Qualifications & Memberships

  • Diesel and Heavy Earthmoving Fitter

Chris Verran

Drilling Manager – Iron Ore

Chris joined Wallis Drilling in 2008 as a driller. In 2013 he became HSE & Training Advisor. He transitioned to HSE & Business Services Manager in 2015, then Drilling Manager for Iron Ore in 2021.

Relevant Qualifications & Memberships

  • Diploma of Drilling
  • Diploma of Work Health and Safety
  • Diploma of Business Administration
  • Diploma of Human Resources
  • Cert IV of Front-Line Leadership
  • Cert IV in Training and Assessment
  • Integrated Systems Lead auditor
  • ICAM Lead Investigator
  • AMEC Safety Committee member (Since 2014)