Harlsan Article Library

Keep up with Harlsan news, product releases and information on how to get the most out of your gear.

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What is RC Drilling?

What is RC Drilling?

What Is Reverse Circulation Drilling? An Introduction To The Benefits Of RC Drilling Things we’re covering in this article: A Short History of RC Drilling How Does RC Drilling Work? How Is RC Drilling Applied? The Benefits & Advantages of RC Drilling The...

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What Is Air Core Drilling?

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...

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Reverse Circulation Drilling Programs

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....

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Premature RC Inner Tube Wear

Premature RC Inner Tube Wear

Problem – Premature RC Inner Tube Wear One of the common problems associated with Reverse Circulation Inner Tubes was the premature wear and grooving caused by the traditional O-ring sealing system. Inner Tubes with O-rings were also prone to bouncing and spinning...

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Deviation When Drilling Deep RC Holes

Deviation When Drilling Deep RC Holes

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...

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Drilling Program – Grade Control

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...

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Drilling Program – Exploration

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...

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How Underground RC Drilling Turned Around a Gold Mine

How Underground RC Drilling Turned Around a Gold Mine

How Underground RC Drilling Turned Around a Gold Mine Using underground reverse circulation (RC) drilling at underground operations is a relatively new technique in the mining industry In Australia, diamond drilling is synonymous with underground (UG) mining. This...

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Reverse Circulation Drill Pipe Weights

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...

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