Innovation. Engineering. Reliability.


ATJ International supply Thwaites articulated 4x4 site dumpers to New Zealand contractors. From a 1 tonne hydrostatic hi-tip to a manual 10 tonne front tip, we have the dumper that will do the job. In Europe, Thwaites distinctive yellow dumpers are one of the most common sights on any construction site; their versatility means they can handle anything from major infrastructure to pipe line, rail or utility projects as well as general building projects. Dumpers offer the most economic earth moving option for small to medium sized site work. They can be easily manoeuvered with minimal impact on the surrounding site, are relatively compact and offer accuracy and safety to the operator and others working on site;  the open cab offers high visibility (360° view) and easier communication.   

Thwaites Dumpers in New Zealand

ATJ International are a family-owned and operated business with offices in Waipapa, Northland and Warkworth. We are the sole dealers for Thwaites Dumpers in New Zealand. Thwaites dumpers are simply the best-quality dumpers on the market. Advanced design and investment in tooling provide today’s customers with the very best products at the cutting edge of technology. This means more than just the strength and reliability you know you can expect from Thwaites; it means an increased focus on customer satisfaction, safety and ergonomics across the range.

Commitment to the Environment

Thwaites recognises the need within the construction industry as well as our local community to practise environmentally sound and sustainable manufacturing. We endeavour to design, manufacture and supply dumpers that are safe to use and efficient in their performance.

9 tonne power swivel dumper
thwaites dumper
9 tonne power swivel thwaites dumper
Thwaites 6 tonne front tip dumper

thwaites dumpers

ATJ International are proud to supply a comprehensive range of Dumpers from 300kgs to 10 tonne capacity power swivel, front tip, hi-tip and hi-swivel.

our services

Thwaites specialise in dumpers and ATJ specialise in Thwaites. So if you want a Thwaites Dumper, call us; you can be confident you are dealing with the experts.