News
Keep up with drilling news, product releases and information on how to get the most out of your gear.
Deviation when drilling deep RC holes
Back in 2011, Harley Hollier at Harlsan was approached by a customer regarding a problem they had drilling 360m deep Reverse Circulation holes. Some of the holes had deviated more than 5 degrees off the intended azimuth when measured at the bottom of the hole. As the...
What is Reverse Circulation Drilling?
Reverse circulation drilling, or RC drilling, is a form of percussion drilling that uses compressed air to flush material cuttings out of the drill hole in a safe and efficient manner. Thanks to the benefits enjoyed by this method, it’s become a popular technique in...
What Is Air Core Drilling?
What Is Air Core Drilling? An introduction to the benefits of Air Core drilling What is air core drilling? Air core drilling uses three-bladed steel or tungsten drill bits to bore holes into unconsolidated ground and is used when safe and clean removal of sample...
What is Reverse Circulation Drilling Programs ?
Reverse Circulation Drilling Programs How reverse circulation drilling is effectively used in exploration drilling programs. Reverse Circulation is used in drilling programs for initial exploration and also for resource definition. There are two types of RC drilling....
Harlsan deflector box wear bend design, boosts safety and durability and reduces maintenance.
Harlsan deflector box wear bend design boosts safety and durability. Don’t have time to read the full article? Here’s a summary of benefits of the new Harlsan Wear Bend: Maintenance intervals up to 5 x longer: The stronger inner core significantly reduces the number...
Drilling Program – Grade Control
Drilling Program - Grade Control Reverse Circulation is the most commonly used drilling method for grade control in open pit mining operations. Grade control is used to define the ore grades and ore blocks in the pit and also provide knowledge for mine planning and...
Drilling Program – Exploration
Drilling Program - Exploration Reverse Circulation is used in drilling programs for initial exploration & also for resource definition. There are two types of RC drilling. One is RC with hammer, used in medium and hard rock that can reach depths up to 800m. Rods...
Now using robot welding technology
The Harlsan Industries 4½” drill rod weld has been independently certified to the highly regarded AS1210 - 2010 Class 1 pressure vessel rating by certifying body Exceed Consulting. The Harlsan Industries 4½” drill rod weld has been independently certified to the...
Reverse Circulation Drill Pipe Weights
Reverse Circulation Drill Pipe Size & Weights Need to work out the weight of your drill rod or drill string? Use our tools. When it comes to dealing with Harlsan, and our products, we always strive to make it as easy as possible for you. In recent months we’ve...
Why You Should Use 316 Stainless Steel Rods and Steer Clear of 304
304 vs 316 Stainless Steel The Difference Between 316 Stainless Steel Rods and 304. Did you know that if your RC drill rig is currently equipped with 304 stainless steel drill rods there’s a good chance your client’s hole survey is going to produce false data and that...
How to use air core bits
The efficiency of an air core drilling program in certain ground strata can be improved with the right equipment and people. In some instances the drilling can be carried out with a faster drilling rate by using an air core bit. The alternate is resorting to more...
Are urethane seals better compared to o-rings?
Urethane seals in comparison to o-rings? Hard wearing urethane seals give significant production benefits & cost savings over the O-Ring system in RC drill strings and are fast becoming the standard for RC Drilling. Urethane seals in drill string applications...
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