For outstanding civil contracting services across Northern Australia, you can rely on Ostojic Group. From providing quarry products and haulage to completing high-quality construction and labour, you can utilise our services from start to finish of your project. We work in some of the most remote and inhospitable regions of Central and Northern Australia. Backed by our highly trained personnel, top-quality equipment and efficient management systems, we can travel anywhere and work on any job, no matter how challenging. To ensure your job goes off without a hitch, talk to us about our project management team. Our project managers can organise forward project planning, programming, ordering of materials, plant and labour requirements and co-ordinate between multiple clients, consultants, suppliers and sub-contractors. Organising our services is easy, simply give us a call, explain your project and what you need and we will provide.

Since 1985, Rowlands Quarries in Katherine has provided local customers with roadbase, sand, concrete premix, limestone, aggregate and much more. Bedding and fill materials are also offered by our team, and we never compromise when it comes to providing the highest standard of customer service. Among the equipment Rowland Quarries have available is a water cart and roller. We can also provide a 40 tonne excavator and front end loader depending on your needs. Our rocks, sealing and concrete aggregates are ideal for a broad range of landscaping and building projects. If you aren't sure what quarry products will best suit your needs, our friendly staff are more than happy to advise you. To find out more about the materials we have available, don't hesitate to contact the team at Rowlands Quarries today. Our quarry in Katherine, Northern Territory can supply to customers located in Darwin, as well as throughout the Territory and down to the Queensland border.