AGA is a partnership formed by Llewellyn Anderson and John Gibson and our Associates.
The purpose of the partnership is to monetize the intellectual property covered by our South African patent along with that which has been gained in the testing, analysis and operation of the 3 machines that have been built.
It is our intent to form partnerships with manufacturers in countries where a machine market exists and manufacturing capabilites are proven. We do this by providing specifications and drawings for the quotation and contruction of machines suited to a specific application.
The management of the partner company will be responsible to ensure that full control of quality manufacture occurs in their company or in associated companies.
Why send all those jobs out of your country?
Our associated companies will have the advantage of being in the same time zone, speaking the same language(s), using the same currency and being on call 24 hours a day for their customers.
Our partnerships will be synergistic so that AGA can provide a common source of information to minimize the financial, technical, and operational risks.
This may include civil or mining projects where a rectangular shape is required and the material to be excavated is competent rock from medium to high hardness.
Our partners have worked in the TBM and RBM industry during the formative years of these technologies and were responsible for many of the key developments which were made in the 1970-2000 time period.
We have experience in the full range of the different aspects that establish economic production and operation of machines.
This forms the basis for a sound long lasting company that is a benefit to employees, managers and owners alike.
Key areas are accurate sales price determination, design quality control, standardization of basic parts, manufacturing quality control, crew training and set up and operation underground.
The machines need to be integrated into an active operation without disruption. They must meet the legal requirements for safe operation and be able to fit into normal operations with a minimum waste of time.
Achievement of profit goals for the manufacturer and the machine operator cannot be met if any small part of this network is not functioning. All systems can always be improved.
History To Date
The first machine, the RM 800 was based on the AGA patented concept. It's intended use is in underground mines with narrow reefs as found in South African gold and platinum mines. (South African Patent No. 99/02714)
It was tested in an Anglo Platinum mine and has undergone a mine funded design review and remanufacturing.
Manufacturing and testing has been organized and managed by Rock Cutting Technological Service (RCTS), Witbank, SA.
The second version of the machine, the RM950 is being tested in a mine near Rustenburg, SA. at this time.
Additional concept designs are available for different size openings as large as 2.5 M x 5 M for access and development drives. Your customer can have a 'hive' of machines at work that operate in a similar fashion, have common spare parts and some of which can be moved around to perform other operations as needed.
Machine Operation and Advantages
The machines are computer controled and operate continuously for 1/2 meter of operation. They can automaticallly regrip themselves without supervision.
In an ideal operation, some of a crew can service several machines.
The primary machine advantage is that it produces a rectangular shaped opening. It uses standard roller type insert cutters. The cutter head is not driven by failure prone gear boxes but by standard manufacture hydraulic cylinders driven by a trailing hydraulic power pack. Good access space is available to place roof bolts directly behind the machine itself and when not operating directly adjacent to the cut face.
The machine cutter head does not rotate about it's axis but about the axis of the main gripper cylinder. It oscillates back and forth so that the cutters roll against the rock in a linear fashion through an arc. The head carries the vacuum skirt and scrapers so that the excavated material is continuously picked up at rates up to 2 liters per second.
Face advance rates as high as 4 mm in 8 seconds have been achieved. The standard expected rate is near 2 mm in 8 seconds over a stroke length of 500 mm.
The machine uses rolling insert cutters to excavate a rectangular opening. The upper photo shows the machine excavating a platinum ore reef. The opening size is 950 mm x 5000 mm. The RM machines have a power of 300 KW and excavate at a rate of 1 to 2 M/hour depending on conditions.
Since the rock fractures in small pieces it can be removed from the face by a vacuum system. It is then dumped into a shaft and collected at a lower level or deposited on a conveyor belt.
What Can We Do for You?
Licensing partnerships can be developed for other countries.
Those with excavation machine experience can also join AGA in an associate capacity and become partners in our efforts.
If you would like more information contact AGA at these email addresses.