Founded on respect, integrity, and shared purpose, we bring cultural heritage and industry excellence together through a commitment to giving back to Country, our way.

the guma-warnii story.

A Partnership Rooted in Place

Founded in 2018, Guma-Warnii was born from a collaboration that united the cultural strength of Robe Valley Ventures with the technical capability of Seabreeze Contracting. The result is a company delivering across earthworks, civil, rail, and mining construction - with diversity, professionalism, and community at its heart.


More than a mark, our logo embodies connection. Two sides meeting in mutual respect, shaped by culture and strengthened through collaboration. It’s a visual reminder that every step we take is with Country, for community, and towards a shared future.


We combine deep local connection with industry-leading expertise to create a business where people, purpose, and performance meet. Privileged to provide opportunity for the Kurama people of the Robe Valley, we continue to carry that intent across Western Australia - wherever we work.


Led by Senior Elder Elaine James and Director Michael Venables, our leadership sets a foundation of honesty, integrity, and respect. More than words, these values shape how we build relationships, how we deliver, and how we measure success.

our community

meet our founders.

senior elder elaine james

Michael venables

our leadership team

Michael Venables

managing director

mark oliver

chief financial officer

brent rowe

general manager

DJ butcher

DIVISION manager

hayley Woloszek 

people & culture

brian

hse manager

hany

division manager

dj

division manager

To provide a platform for people to come together from all walks of life to create a diverse mining services group with exceptional outcomes.

Our Mission

value #1 honesty

We believe honesty builds trust - and trust builds strong partnerships. Being open and accountable in everything we do ensures our relationships, on and off Country, are built to last.

value #2 integrity

Integrity guides every decision we make. It’s showing up, doing what’s right, and standing by our word - even when the work is hard, or the path isn’t easy.

value #3 Respect

Respect sits at the heart of who we are. It means listening before acting, honouring culture and Country, and treating people with care, fairness and understanding in every part of our work.

Sustaining Country, Shaping Tomorrow

Guided by a zero-footprint approach, we aim to leave Country in better condition than we found it. Our focus is on minimising impact, protecting heritage, and creating long-term environmental, cultural, and social value. Through collaboration, innovation, and care, we continue to build a future where progress and preservation walk side by side.

we’re trusted by

HEAD OFFICE

1 Oxide Loop, Gap Ridge, Karratha WA 6714

CONTACT

We honour their Elders past and present, and walk forward with respect - building with Country, not just on it.