905-569-2_7-11_Mining.qxd 08.09.2011 11:37 Uhr Seite 1 Exploration and Mining Equipment 7/2011

I for the Exploration and Mining Industry BAUER Maschinen GmbH is the leading company in developing and foundation equipment. Based on their world wide experience over many years, Bauer Maschinen is also actively involved in the field of Rotary drilling rig BG 36 drills holes with in Kimberlite pipes (Australia) We offer equipment and systems in • Onshore exploration • Offshore exploration • Bulk Sampling • Groundwater control • Cut-off systems • Mine development manufacturing suitable equipment, we are designing new solutions together with our clients for special challenges. © BAUER Maschinen...

(commercially viable (Definition Wikipedia) Exploration activity is conducted in brownfield areas (an area where there is current or past mining of a particular resource) as well as in greenfield areas (an area where there are no current mining operations or known mineral Methods for exploration can be divided • Drilling core samples that intersect • Bulk Sampling [Drilling core samples Our daughter company PRAKLA Bohrtechnik provides drilling rigs for drilling diameters of up to 1000 mm. RB rigs are mainly used for sampling and coring to a depth of 500 m and more. To accurately investigate rock...

[Bulk sampling "Bulk sampling" is a commonly used industry term to describe the practice of the removal of relatively large quantities of a mineral bearing substance for the purpose of testing mineral content. Bulk sampling locations are selected at random with the necessity of using mobile but powerful equipment which is capable of fast and easy self- travelling between sampling several hundred tons of ore at one sampling position. Equipment, which originates from the foundation business, are excellent tools for this Typical examples of equipment which is normally used for constructing bored...

Reverse circulation drilling rigs Megalodon alluvial deposit in Kleinzee area, South Africa Bulk sampling of mine dumps is an ideal application for 2,5 m diameter sample holes in Kimberly, South Africa Canada with diameter of 1200 Installation of long top casing Thereafter drilling system is changed over to RC drilling. The unit is derived from the standard Bauer BG series. © BAUER Maschinen GmbH, 7/2011

Sea floor bulk sampling for diamonds with trench cutter technology Over 4000 samples were extracted from the seabed to a Namibia by a sampling tool MeBo - Sea floor core drilling MeBo is a sea floor core drilling rig, working in water depth up to 2000 m remotely controlled from the vessel via umbilical (survey by video cameras and sensors). The drill rig is powered by four hydraulic pumps that are driven with electric motors. The MeBo stores drilling rods, casing tubes, and rotary barrels on two rotating magazines. With a storing capacity of 17 barrels, 16 rods and 15 casing tubes, the MeBo has...

905-569-2_7-11_Mining.qxd 08.09.2011 11:38 Uhr Seite 7 Mine Development Bauer Maschinen offers machinery for working steps which are associated with mine development, such as • Blast hole drills • Drill rigs for additional exploration • Trench cutter technology for mining • Costumized solutions • Machinery for the control of ground water. © BAUER Maschinen GmbH, 7/2011 7

Blast hole rigs The BAUER Maschinen Group offers blast hole drill rigs in various sizes from two of their daughter companies. The machines of HAUSHERR (Germany) can be used in blast hole and exploratory drilling in all scopes of open cast mining. They are not only suitable for rotary drilling but also for DTH drilling. A slew ring with 90° pivoting angle allows the machine to travel parallel and with enough safety clearance to the quarry wall. Each rig has an on-board compressor, a rod magazine and a FOPS cabin. The rigs are powered by CATERPILLAR-diesel engines with sufficient power reserves....

Mining with trench cutter technology The well-proven trench cutter technology of Bauer - which is normally used for constructing underground walls - can also be' used for special mining activities. A good example is the diamond mine in Sierra Leone. There are areas where Kimberlite is present in narrow but long and deep veins within \ granitic base rock. With the trench cutter technology it is Kimberlite dykes without the need of large scale rock Special systems for mining For its Mclean Lake project, AREVA Resources Canada Ltd. addressed BAUER Maschinen GmbH for the development of an alternative...

[water control in open mining Cut-off wall Cut-off wall systems are ideally suited as water barriers around excavation pits, mining pits or similar. A variety of cut-off systems is available for almost each type of soil and site condition, for temporary or for permanent use. Cut-off walls are constructed with techniques of the specialist foundation industry like trench cutters, slurry wall grabs or soil-mixing techniques. Wall material ranges from plastic concrete, standard concrete to in-situ mixed soil-cement material. A huge cut-off wall on the DIAVIK Diamond Mine in Canada serves as an impressive...

Slurry Handling/ Mixing and Recovery Plants Well drilling A standard method for groundwater control is the installation of wells. Wells are constructed outside of cut-off walls to relieve water pressure on the cut-off wall and they are installed in the open pit to lower the groundwater table for ensuring dry operation. Our daughter company PRAKLA Bohrtechnik as well as BAUER-DEWET provide drilling rigs for drilling diameters of up to 1.000 mm. For many operations slurry is required for stabilizing holes or as transport medium for cuttings. Slurry mixers are essential components when constructing...

BAUER Maschinen GmbH e-mail: [email protected] Design developments and process improvements may require the specification and materials to be updated and changed without prior notice or liability. Illustrations may Include optional equipment and not show all possible configurations. These and the technical data are provided as indicative Information only, with any errors and misprints reserved.