Harlsan welcomes new management

But they’re by no means new faces. If you’ve done business with Harlsan during the last 15 years, then you would have dealt with Matt Bevan. Matt started his journey with Harlsan as a Trades Assistant before moving into purchasing, drafting, despatch and...
What is Reverse Circulation Drilling Programs ?

What is Reverse Circulation Drilling Programs ?

Harlsan > Articles by: harlsan 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....
Harlsan’s Guide to RC Drilling

Harlsan’s Guide to RC Drilling

Basics of Reverse Circulation (RC) Drilling – What is RC Drilling? Reverse Circulation, or RC, drilling uses drill rods with inner and outer tubes & is sometimes referred to as Dual wall or Dual Tube Drilling. Reverse circulation is achieved by blowing air down...