When customers think Air Core they think Brown Bros Drilling. We have a rich experience in Air Core Drilling dating from the mid 1980’s. Only brand named Australian Factory pipe and tooling is employed, resulting in a quality sample, less down-hole issues, and more holes in the ground.
Some of the geology Brown Bros Drilling has Air Cored include: mineral sand, coal, aggregate sand and pumice, and soft limestone.
You will be impressed by the drilling speed and sample quality.
Brown Bros Drilling have been Reverse Circulation Drilling since the early 1980’s; with the option of three “Factory Built” Reverse Circulation sizes and a range of truck and track mounted drill rigs, you know we can get the job done. Our 4.5” system is designed for deep difficult exploration drilling, the 3.5″ system is designed for mid depth difficult access exploration, while our 3” system is designed for shallow difficult/limited access situations where the big rigs cannot get to.
Brown Bros Drilling are one of the innovators of Wireline Coring in New Zealand. We have been successfully Wire-Line Coring for over 50 years and have accumulated a huge wealth of knowledge from all over New Zealand. From the Waihi Gold Fields to Northland Limestone’s, the Huntly Coal Fields to the Ohia Coal Fields, Brown Bros Drilling have Wire-Line Cored it.
With the Concentrix Overburden System, Brown Bros Drilling can obtain high quality Reverse Circulation type samples in difficult to drill mineral rich gravels, boulders and alluviums.
The system works similar to Reverse Circulation with the same benefits. Also you can drill through difficult geology, then switch to either Reverse Circulation or Wireline Core.
