Drilling in bad ground is not a driller’s most favourite pastime as he runs the risk of loosing his DTH tooling. Bad ground may be made up of broken or fissured rock, clays, sands or damp heavy conditions where dust can cling to the wall of the hole. Naturally it is important to keep the borehole open during the drilling process.

High air pressure helps to keep the hole clean and sometimes a “Back Reamer” can assist to break up loose rocks within the hole or help to ream away any built-up caked dust on the wall of the hole. Mincon Hammers have variable choke systems that allow increased airflows through the Hammer to assist in purging the hole.

Foams and water may be used in construction and water well drilling to purge the hole clean. Foams are particularly helpful where the air pressures and volumes are low.

A basic, but important, tip is to “Keep it Clean”. Even the smallest foreign particle can cause untold damage to the Hammer.

“World Class” DTH Tools need tight tolerances between the piston and the internal running surfaces for speed and efficiency. Dirt or other foreign bodies passing through can become trapped between the outer wall of the piston and the internal bore of the cylinder.

When this happens, with the piston striking the bit at over 30 times per second, intense heat can be generated and minute cracks can begin to develop from the surface and travel inwardly to cause piston failure.

How many times have we come to change the bit or strip the Hammer only to find that it cannot be dismantled without extreme difficulty and much effort.

Hammer manufacturers are sometimes at a loss what to do when it comes to thread design. If the threads are of one design they may be hard to unscrew, whilst of another design they may become unscrewed in the hole with the loss of the bit and retaining rings. Either case does not suit the driller.

Most makers opt for a compromise and adopt the 3 start thread arrangement, where there will actually be 3 threads following each other, instead of just the one that is common on a simple bolt and nut.

I know most of you out there are professional drillers, so please bear with me whilst we pass on a basic, but most important bit of advice to our new members.

A DTH Hammer has finely engineered internal components, much the same as a car engine, demanding the same protection. Without it things will go wrong and you and your company will be disadvantaged.

A proper rock oil of the correct grade, in the recommended amounts is needed to lubricate and protect the Hammer.

In recent years there has been a major push in geothermal heating and cooling system installations.  Escalating and uncertain fuel costs have been the driving force behind this, and with the possibility of reducing heating and cooling operating costs by 30% to 60% coupled with Federal and State incentives the proposition of going to Geothermal is very attractive.  Additionally, payback can be in as little as two to seven years.

We are all becoming a little greener these days and geothermal is certainly a very green option.  It reduces our dependency on fossil fuels and has a zero impact on the environment.  It is a renewable energy source that does not contribute to the green house effect.  With the financial savings and lack of impact on the environment it is not surprising that all new government buildings and schools are required to have geothermal systems to heat and cool them.  All in all a pretty good result for the economy and the environment.

The major component of a geothermal system is the loop that utilizes the earth’s natural, limitless supply of geothermal heating and cooling to help keep temperatures constant in all kinds of structures.  To make this possible the drilling contractor is required to drill a series of holes to install either a closed or open loop system.  The depth of the holes can vary from installation to installation, and depending on the size of the structure the quantity of holes also varies.  What does not vary is the drilling contractors need to finish the job as quickly and efficiently as possible.

An Interview with Dennis Stoudt, President of C.S. Garber & Sons, Boyertown, Pennsylvania by Michael Cowell of Mincon Rockdrills.

CSGarbers4RigsC.S. Garber & Sons Inc. was founded in 1929 as a single drill company in the waterwell industry.  The company was family owned until 1980 and was again sold on January 7th, 2000 to three employees who currently manage the corporation.  Dennis says “the company owns and maintains twelve air rotary drills and eighty five support vehicles for the operation of our full service blasthole, well drilling, pump and water conditioning installations and service crews and employs forty two people”.  Dennis himself has been with C.S. Garber & Sons for close to forty years joining the company in 1969.

Surface Drill 6Mincon’s state of the art Drill Rig Rebuild Centre is based in the vibrant area of Vancouver, British Columbia, Canada. Focused heavily on the underground mining sector we are ideally placed both for the North American Mining Sector, and with excellent logistics facilities in Vancouver can offer an excellent service to our remaining customers around the world. The Rebuild Centre transforms used underground jumbos and surface drills to as new factory condition at a fraction of the price of a new drill machine.

Wolverine4000ControlPanelAll rebuilt drill rigs have the option of having our Mincon Wolverine 4000 Control panel and Hydraulic system fitted. This allows a huge amount of flexibility to the operator as it allows for the operation of any manufacturers Hydraulic Drills. These can be fitted and run at the OEM pressure settings due to the Mincon upgraded power packs which can be set to various operating pressures at the turn of a selector switch. Since its introduction the Wolverine system has been proven to be superior to OEM systems.

In addition to the Drill Rig Rebuild Centre the Vancouver Facility is equipped with a state of the art Top Hammer Rebuild and Test Facility. This facility is set up to work on any manufacturers hammers. The hammers will be rebuilt to OEM specifications and tested on site before being returned to the contractor.

Scandinavia has long been acknowledged as being at the forefront of Ground-Source Heat Pump technology and the development of the most efficient installation techniques.

There are currently in excess of 315,000 installations in Scandinavia and the experience and expertise gained during their completion is now being utilised in many other, energy conscious, countries around the world.

Alongside the necessary expertise, the selection and use of the best available equipment is also vital to any efficient drilling operation.