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PGM Platinum Group Metals Engineering Track Record
The BATEMAN projects track record over the past decade in the PGM (platinum-group metals)
market includes the Rasimone Platinum concentrator, Potgietersrust Platinum's concentrator,
Impala Platinum Limited-Refineries' UG2 project and the EPMR and platinum circuit, Hartley
Platinum's surface works, Western Platinum's base-metal refinery, the Stillwater plant
extensions and Anglo's Waterval, Modikwa and PMR projects.Besides the major projects during this period, BATEMAN has also been involved in more than
20 feasibility and project development studies.. In addition to technical aspects, the work has
often involved assisting clients to source the finance required.Modikwa UG2 concentrator commissioned successfully
Hot commissioning of the Modikwa (formerly Maandagshoek) UG2 concentrator was successfully
completed during the second half of 2002, on behalf of Anglo Platinum Management Services (Pty) Ltd.
The plant is located in RSA’s Northern Province, approximately 30 km northwest of Burgersfort on the
road to Polokwane (formerly Pietersburg).BATEMAN process and mechanical engineers were part of the integrated-commissioning team
reporting to the client’s commissioning manager. BATEMAN provided assistance with the hot
commissioning through to October 2002. The transfer to the operational team from the hot
commissioning phase was made seamlessly utilising a new initiative from Anglo Platinum
Projects. A team of process engineers from the projects group was put in place to direct the
early operational phase with full on shift accountability until steady operations had been achieved.
The very successful commissioning phase was thus built upon with a smooth transition to
operations – the impressive plant capacity ramp-up and very high plant uptime figures reflect
on the successful inputs from all three parties: BATEMAN, Modikwa and Anglo Platinum Projects.The cold-commissioning phase commenced during May 2002 and in the first week of August the
first ore was fed to the primary mill and the ball charge of the mill then gradually increased to full
capacity. The ramp-up of the tons milled at the new plant went very smoothly. In August, 51 % of the
design throughput of 200 000 tons per month of run-of-mine (ROM) UG2 ore was achieved and this
increased to 101 % in September and 109 % in October.naturally occurring, PGM-rich, fines fraction in the ROM ore to be separated ahead of the primary
milling circuit and to be processed in a dedicated flotation circuit. In addition to the primary mill,
there are two, separate, regrind mills, each with flotation circuits.The flotation concentrate is fed to a high-rate thickener and dewatered in a horizontal-plate filter.
The final product is dispatched in trucks. The flotation tailings are thickened in a high-rate thickener
and pumped through an overland pipeline to the tailings dam.A control-budget estimate for the project was completed by BATEMAN in August 1999 and the
overall project approved in December 1999. BATEMAN provided the engineering services,
including the implementation of the process design, and Anglo Platinum the contract management
services. The joint team operated out of the BATEMAN offices in Boksburg.Serving the platinum- metals producers
Bateman Metals, a newly formed business unit of BATEMAN Engineering NV, has been focusing
increasingly on engineering and processing projects related to platinum- group metals (PGMs).
It has proved and strengthened its market leadership in platinum-refinery projects and is currently
engaged in the study and implementation of Anglo Platinum’s extension project aimed at maintaining
Anglo’s position as the largest producer of refined platinum in the world.BATEMAN supports the whole PGM industry through its development of novel and niche technologies
for platinum refineries and associated supporting base-metal refineries. Thus, molecular-recognition
technology (MRT) has already been installed in PGM refineries. MRT is marketed by MRT Africa and
MRT Australia, partnerships between BATEMAN and IBC of Utah, USA.PGM concentrators continue to be installed in Southern Africa and BATEMAN has been very much
part of this expansion. It has conducted several projects for Anglo Platinum, including the Bafokeng
Rasimone concentrator just outside Rustenburg, the expansion of the Potgietersrust concentrator
and the Maandagshoek concentrator, which is due to be completed shortly. It is also involved with
the upgrading of the concentrator of Impala Platinum’s UG2 plant and the recommissioning of the
Barplats Crocodile River plant. Again niche technologies are being utilised whenever possible to
add more value to PGM concentrators.The concentrator process itself still holds the single largest opportunity for improving recoveries
in PGM processing. New technology offered by N2Tec, a joint venture with Newmont, USA, is being
explored, with a novel cyclone under development and the use of dense- medium separation for
UG2 type ores being investigated. In respect of the latter, BATEMAN has specialist skills resulting
from the installation of over 300 plants worldwide to process many minerals. BATEMAN’s engineered
technologies are also having a good impact on the market. This includes Ultrasep thickeners, tank
cells for flotation, electrostatic precipitators, granulators and materials- handling equipment such
as conveyors, chutes and silos.BATEMAN’s smelter experience includes the refurbishment and modification of a submerged-arc
furnace for Impala Platinum. Hartley Platinum’s smelter was built by BATEMAN as part of the overall
project. BATEMAN has also conducted studies for smelter operations for either existing or new
plants. Bateman Titaco’s smelting expertise is currently being expanded with the development
of a conroast process in cooperation with Mintek.A new BATEMAN focus is on novel methods of implementing smaller brown- and green-fields
projects in order to contain project costs and to pass the resulting savings on to the owners of
projects. The contractual vehicle for these smaller projects is Tawana Projects (Pty) Ltd, a joint
venture between BATEMAN and Pro Plant Engineering Design.Bafokeng Rasimone Platinum Mine Concentrator Plant
A 200 000 tonne/month concentrator at the Bafokeng Rasimone Platinum Mine (BRPM) as
been established for Amplats Management Services (Pty) Ltd just outside Rustenburg, North
West Province, RSA.Project Scope
This greenfields project involved the design and detailing, procurement and commissioning
of all equipment (excluding the crushing and screening plant). The major equipment included
primary and secondary mills; flotation plant; concentrate and tailings handling circuits; water
and air reticulation systems; and reagent storage areas. The project also covered the coarse
ore stockpile and the storage silos for mill feed. The entire site area was prepared with bulk
earthworks, terracing, drainage and sewage reticulation and roads, buildings and associated
infrastructure.
Process Circuit
The run-of-mine (ROM) ore is delivered from two shafts by means of an overland conveyor and is
fed to a conical stockpile suitable for three days' storage. Vibrating feeders draw from the stockpile
and deliver the ROM ore (300mm x 300 mm x 500mm) to the crushing and screening plant. A
primary jaw crusher, vibrating screens and five gyratory crushers allow the feed material to be
reduced to minus 8 mm and this is conveyed to the two mill feed silos. The primary mill is a
20 ft (6,10 m) ball mill with classification by means of a cyclone bank. The overflow from this
unit is fed to the primary rougher flotation cells (10tank cells of 50 m³ each) with their associated
cleaner and recleaner circuits (20 m³and 10 m3³ tank cells). Recovery of platinum from the tailings
stream is further improved using the secondary milling and flotation plant. The 16 ft (4,88 m) ball
mill feeds a similar flotation plant of roughers, cleaners and recleaners as has been described above.
The final tailings stream is thickened in one of two high rate BATEMAN Ultrasep thickeners before
being pumped to a tailings dam some 4 km distant using a multi-stage centrifugal pump system.
The high specific gravity and the special pumping considerations required preliminary test-work by
the CSIR.
The platinum concentrate is thickened using a conventional thickener and subsequently de-watered
by means of a Larox filter press. This material is conveyed to one of two storage bins and then via
belt feeders into trucks for despatch to the Waterval Smelter at Rustenburg.Special Features
The new mine and concentrator plant were developed on land owned by the Royal Bafokeng Nation.
Amplats has a unique working relationship with Royal Bafokeng and looks forward to long term
co-operation. A condition of the project was that the Royal Bafokeng Nation and local suppliers
be included in the provision of contracts, labour and services as far as possible and to this end
BATEMAN and other contractors formed alliances and services which assisted with the
empowerment of the communities and the transfer of skills and training.This project followed an extremely tight, fast-track programme. It was planned to a high level of detail
and controlled down to every drawing to the sub-contractors and to the supply and delivery of every item
of equipment to site. The construction was undertaken in a systems-oriented manner so that
hot commissioning of the plant could follow the construction phase smoothly and during
commissioning all services and utilities were available plant-wide. All the structural steelwork
for the project was designed so that it could be galvanised and obviate the need for on-site
painting after erection. The galvanised steelwork will provide appropriate protection against
the elements for the anticipated 25 year plant life.Project schedule
BATEMAN undertook the original feasibility study for the project. The project was awarded in
mid-September 1998. Cold and hot commissioning of the plant's wet section was completed
and handed over to the mine in December 1999. The plant is performing well with the milled
ore tonnages ramping up to design throughput by mid-2000.The Waterval Cleaner Replacement Project
Anglo Platinum's R35 M Waterval Cleaner Replacement Project in Rustenburg, RSA, was completed
on schedule in August 2000.
This brownfields project involved the installation of a flotation circuit to replace the old system in
the Waterval platinum group metals (PGM) concentrator with new technology equipment. It was
estimated that the payback period for the circuit would be less than six months.
A feature of the project was the need to compress the flotation circuit, with its 15 cells and
ancillary equipment, into a small space in the existing 40-year old plant. Accordingly extensive
use as made of the 3D Solid Edge computerized design program permitting the BATEMAN
engineers to design and review the circuit and confirm that it would meet the specifications -
before any site work commenced. The result was a circuit fitting perfectly into the available space.
BATEMAN was originally awarded the contract for design and engineering services in October 1999
and completed this fast-track project in 10 months.Maandagshoek UG2 platinum concentrator
Anglo Platinum Management Services (Pty) Ltd has awarded BATEMAN a contract for the
engineering and detail design of the 200 000 tonne/yr concentrator to be built in the Burgersfort
Steelpoort area, Northern Province / Mpumalanga, RSA. This project followed a control-budget
estimate completed by BATEMAN in August 1999.
BATEMAN will be supplying the engineering services, with Anglo Platinum supplying the contract
management services. A joint Anglo Platinum - BATEMAN team will operate out of the BATEMAN
offices in Boksburg. The concentrator, which will process run-of-mine (ROM) UG2 ore from two
shafts, is part of a R1,35 billion joint venture between Anglo Platinum and African Rainbow
Minerals (ARM).
The ROM material will undergo primary crushing prior to separation and storage of the fine
and coarse fractions in dedicated silos. These fractions will be recombined proportionately
and fed to an autogenous primary milling circuit. The fines fraction will report to a dedicated
flotation plant. Apart from the primary mill and its associated flotation plant, there are separate
regrind mills, each with dedicated flotation sections.
The ore concentrate will be passed to a high-rate thickener and dewatered in a horizontal plate
filter, with the final product being dispatched in trucks. The flotation tailings will be thickened in a
high-rate thickener and pumped through an overland pipeline to the tailings dam.
The overall project was approved in December 1999 and BATEMAN's share of the work awarded
in June 2000. This involves about 120 000 man-hours of work and is scheduled to be completed
before the end of 2001. The project team will be re-established in January 2002 to hot commission
the plant, which should be completed by February 2002.
The Solid Edge 3-D design draughting program is being used or the design of the Maandagshoek
concentrator. This design strategy was first used by BATEMAN on Anglo Platinum's recently
completed Waterval Cleaner Replacement Project and the experience gained is being put to
good use on the new projectImpala awards UG2 ore-separation project
Impala Platinum Limited, Mineral Processes, has awarded BATEMAN subsidiary Bateman
Engineering Limited, RSA, the UG2ore-separation project. The project, located 25 km Northwest
of Rustenburg, RSA and covered by a lump-sum turnkey contract valued at about R100M, will take
one year to complete.This is primarily a brown-fields project which includes some new plant. The objective is to upgrade
and increase the capacity and efficiency of the ore separation plant used to concentrate platinum-group
metals from run-of-mine-ore (ROM) from the UG2reef, one of the reefs in the area containing
platinum group metals.To achieve this the project will provide additional ROM storage and the primary mills will be
converted to a fully autogenous grinding circuit. A pebble crushing and screening plant will be
introduced together with classifying screens to separate the high- and low-grade ore streams. One existing secondary mill will be converted to grind the low-grade product
and a new low-grade flotation plant will be installed. The existing flotation plant will be upgraded to
handle the flotation of the high-grade material. Materials-handling equipment will be installed to
move the material around the circuit and provision has been made for dust-extraction in he form
of bag filters. Pumps and piping will be supplied to handle tailings as a result of the increased
plant throughput.BATEMAN is the main contractor and will undertake the whole project, from design to engineering,
procurement, erection and commissioning.Crocodile River Platinum Concentrator
BATEMAN is again engaged on a project at the Crocodile River PGM (platinum group metals)
concentrator, located between Brits and Hartebeespoort Dam west of Pretoria, RSA. Barplats, a
subsidiary of Impala Platinum Limited, has awarded BATEMAN an EPCM (engineering,
procurement, construction and management)project aimed at restarting operations at
the concentrator.
The concentrator was originally supplied by BATEMAN to Lefkochrysos, as the operation was
initially known, in 1988/9 and in1990/91 Bateman - Van Eck & Lurie returned to site to complete
several contracts from Rand Mines for modifications and additions to the plant. Due to mining
problems and low PGM prices, the plant was mothballed in 1992 until recently when the current
owners, Barplats, decided to restart operations.The objective of the current project is to restart the plant with minor modifications and some
new additions in the form of dense media separation, classification and load-out facilities. The
product will be sent for further processing to Impala’s Rustenburg smelter.Although the whole project is scheduled for completion by the end of the year, it will be done in
phases. A definitive cost estimate is to be provided first to finalise costs. The project will then
continue into the final design, engineering, procurement and construction phases. While the
overall cost is still to be determined, BATEMAN’s share of the project amounts to R7,5M.Platinum purification at Impala’s EPMR
The new platinum purifcation section at Impala Platinum Limited-Refneries, Springs, is an addition
to the enhanced precious metals refinery (EPMR) completed by BATEMAN in 1997.A classical
platinum refining route is used in the new plant, with two signifcant new pieces of equipment
added to improve the process. The first is an automated Nutsche pressure filter for the removal
of insoluble impurities, and the second is a Peeler centrifuge for the separation of the pure
platinum salt.Hot commissioning of the plant was accomplished in a minimum of time, and within two weeks
of operations commencing, all the mainline platinum was routed through the platinum purifcation
section. The product meets Impala’s stringent purity specifcations. The project was completed in
accordance with operational requirements and within the budgeted cost. This project was the
latest of a sequence of projects undertaken at Springs by BATEMAN for Impala Platinum
Limited-Refineries.
Integrated project team
A feature of this EPCM project was the way in which an integrated team of personnel from
both Impala and BATEMAN tackled the project. The bulk of the work was in fact done out of
Impala’s Springs offices, greatly facilitating team-working relationships during the project and
the hand over of the facility to the client on its conclusion.Impala supplied all of the basic design criteria while BATEMAN brought its decades of project
experience on the processing of platinum group metals (PGMs) to the team. BATEMAN also led
the hazard and operability studies (Hazops), which ensured that the commissioning of the new
equipment proceeded smoothly. Besides the normal operational requirements of the plant, the
project team also ensured that Impala’s specifcations in respect of security, health and safety
were met.Platinum processing
Platinum refining involves allergenic metal salts and dangerous and corrosive chemicals. This
means that exotic materials are needed, such as titanium, glass reinforced plastics (GRP), glass
(used for pipelines, condensers, ion exchange columns and the lining of reaction vessels),
SAF 2205 stainless steel, carbon-block heat exchangers, polypropylene and polyvinylidene
fuoride piping and tanks. The plant design and methods of construction require specialist
experience and are often onerous. All emissions from the plant are channelled through a bag
filter to eliminate the release of platinum salts to the atmosphere.Safety
In respect of safety, the project team maintained BATEMAN’s good record, with no disabling injuries
occurring during the 156 760 man-hours worked on the project.
Project statistics
Client: Impala Platinum Limited-Refneries Location: Springs, RSA Contract: Type EPCM Duration Planning November 1997 Budget estimate March 1998 First platinum produced June 1999 Plant hand over August 1999 Total project man-hours 156 760 hours Peak labour force 100 Disabling injuries Nil Amplats Potgietersrust platinum concentrator expansion
This EPCM project by Bateman Minerals for Amplats Management Services increased the
processing capacity of the concentrator at the Potgietersrust PlatinumMine, Northern Province,
RSA, from 270 000 to 425 000 tonne/month.Key features of the project included: increasing the tonnage through the existing autogenous mills
and processing the throughput in a dedicated milling and fotation plant after in-circuit crushing. This
overcame previous process inefficiencies and improved recoveries from 84 % to above 90 %; an
automated pressure filter system to reduce the moisture content of the concentrate from 15 % to12%.
This reduced operating costs and labour input; attribition scrubbers (30 by 20 m3cells - the largest
in such an application worldwide) which agitate the slurry to polish the particles and assist in the
recovery of platinum; new engineering design techniques which contributed to the successful
design arrangement of the new fotation tank cell and attrition scrubbers; and interfacing brown
and green fields components in the same project, with a high degree of planning and organisation
to minimise production down-time. The original feasibility study for this expansion was carried
out by BATEMAN.The Hartley Platinum Project
The project involved the provision of facilities to process 2,1M tonne/yr of ore from the Hartley
Platinum Mine and included conveyors from the mine to the plant, the milling and fotation circuits,
the smelter, the base metals refinery and the necessary infrastructure. BATEMAN’s involvement
in the project was ongoing, starting in 1990 with the preliminary feasibility study and culminating
in the execution of the project.High environmental standards for the plant had to be observed. This is a non-toxic discharge
plant with respect to sewage, reticulation and storm-water systems. Dust and gas emissions
are strictly controlled with sulphur dioxide monitoring stations in the surrounding areas. Boreholes
at the tailings dam have the latest monitoring and testing equipment.Amplats project awarded
Bateman Minerals and Industrial Limited (BMI) has been awarded a contract by Amplats
Management Services (Pty) Ltd (Amplats). It involves the engineering, design, procurement,
construction and commissioning of plant to expand production at Potgietersrust Platinum
Limited's existing concentrator plant.
The original feasibility study carried out by BMI led to the development of an agreement on
this allowing both parties to work together as a team.
BMI will be responsible for upgrading the storage area for the crushed run-of-mine ore,
including a new coarse ore stockpile and silos; primary and secondary mills; a sewage
water treatment plant; primary pebble, concentrate and tailings handling circuits; water
and air reticulation systems and reagent storage areas as well as an upgrade of the
existing flotation circuit.
The contract is reimbursable with a notional value of some R 105M. It was won against four
other engineering management companies tendering for the study. BATEMAN is a leading
contractor for supply of plant for the processing and refining of platinum group metals and
has recently been engaged on projects for Hartley Platinum (Zimbabwe), Impala Refineries
(Springs, RSA), Empress Nickel (Zimbabwe) and Bulong Nickel (Australia).
Base metals products, services and new technology
BATEMAN’s products, services and new technology of interest to base metal producers include:
BATEMAN has entered into an agreement with IBC Advanced Technologies, Inc., USA, to establish
a new company MRT AFRICA. The joint venture will market engineered process plants using IBC’s
molecular-recognition technology (MRT). MRT AFRICA has an exclusive licence for Africa but will also
operate outside Africa on a case-y-case basis. This combination of IBC’s processing technology and
BATEMAN’s capability s engineer and project manager, brings novel solutions to the minerals and
metals processing industry.Formulated from a Nobel prize-winning concept, MRT provides rapid, selective extraction and recovery
of cations and anions from process or waste streams and enables commercial metallurgical
separations to enhance processes that were previously not technically and are economically
feasible. In specific cases complete recovery of high purity (99,95 to 99,99 %) marketable metals
is possible after a single-pass process. The technology utilises custom-designed organic crown
molecules or other chemical ligands containing atoms and functional groups which selectively
target specific metals. Selectivity is determined by the chemical nature of these molecules and their
overall size and shape. When bonded to solidhydrophilic supports, such as silica orpolyacrylate, the
ligands can be incorporated into resin beads, porous membranes or gels and contacted with the
solutions to be processed.Applications have been developed for many base metals and include the removal and refining of
copper, cobalt and nickel from zinc and copper electrolytes, raffinates or bleed streams; of copper,
zinc, nickel, manganese, iron and other metals from acid mine streams; and the removal of impurities
such as bismuth, antimony, germanium, fluoride and chloride from copper and zinc refinery streams.The removal of copper, cobalt and nickel in zinc purification will be piloted soon. Several industrial
applications are now well-proven, for example the commercial recovery of cathode-quality copper from
an acid mine-drainage stream at flow rates up to 20 000 l/min. A feature of MRT is that trace amounts
of contaminants can be removed from large volumes of solution lowing at many bed volumes per minute.
MRT has enhanced the commercial recovery of platinum, alladium and rhodium from spent automobile
catalytic converters as a result of the improved recoveries achieved and the reduction of processing costs
and metal inventories in the process. Palladium is separated and purified using MRT at Impala Platinum
Limited–Refineries, Springs, RSA. Impala developed the process and BATEMAN built this plant in 1994/7
which was the first platinum group metals refinery to use this technology. The MRT system reduces the
palladium processing time and costs and increases the palladium separation efficiency and recovery,
while having a beneficial effect on the environment.MRT has also been proven for the efficient treatment of high copper-gold ores, with the recovery of old
followed by copper and recycling of the cyanide. It can also be used for primary gold refining and tailings
dam recovery.In another application traces of mercury are removed from concentrated sulphuric acid, a by-product of
various metallurgical roasting and smelting operations. More smelters are having to produce mercury-free
acid in order to meet new stringent regulations and this was not achievable with traditional ion exchange
systems which are ineffective when used with high acid or relatively low mercury concentrations.The technical and economic feasibility of industrial applications of MRT will re-evaluated for clients so
that complete solutions for their metal refining and recovery needs can be offered. MRT Africa will supply
commercial plants, resins and consulting services following the completion of preliminary studies.
Although the initial focus will be on minerals, there are many potential applications of MRT in the
chemical industry which will be developed in due course.PGMs and Base Metals
BATEMAN offers a global service for platinum group and base metals producers. It has done this by
drawing together and consolidating the company’s best process and engineering skills and expertise,
in platinum group and base metals production, from its offices around the world. This will ensure that
the best engineering and project execution practices are assembled to benefit clients and will provide
the best possible process solutions while minimising the time to bring projects to completion.
According to Steve Burks: “The similarity in the processes used for platinum group metals (PGMs) and
sulphide nickel, copper and cobalt ores, and even to recover zinc and lead, provided the main rationale
for this consolidation.
“During the past few years in which it has been involved in the largest PGM projects as well as several
major base metals projects around the globe, BATEMAN has installed or studied the feasibility of the
whole spectrum of unit processes essential for the extraction and processing of PGMs and base metals.”
This has resulted in an intimate knowledge of the appropriate general ore dressing processes,
including crushing, milling, size classification, dense media separation (DMS), gravity and magnetic
separation, flotation and liquid-solid separation (thickening and filtration). Experience with
pyrometallurgical processes includes drying, smelting (AC, DC and slag reduction furnaces),
converting (Peirce Smith, TBRC, Ausmelt and other similar techniques), roasting, granulation,
acid production, off-gas handling and scrubbing.
For base metals, involvement with leaching processes has included heap, vat, tank and bacterial
leaching, pressure leaching (concentrates, mattes and whole ore) and chloride and ammonia leaching,
the latter two involving the need for specially resistant materials. Base metals purification has been
undertaken using solvent extraction (SX) with either BATEMAN mixer settlers or pulsed columns, ion
exchange, molecular recognition technology, precipitation, cementation, electrowinning (EW),
electrorefining and crystallisation.
In precious metals refining, where essentially the same unit processes are involved as for base
metal refining, the BATEMAN team has been accumulating experience almost continuously for more
than a decade. In these plants, special materials and construction techniques were necessary to cope
with the toxic and corrosive reagents involved.
This minerals processing knowledge is supported by extensive plant design and project management
capabilities arising from decades of project experience. Materials handling and environmental control is
always a vital part of projects which BATEMAN is well equipped to handle in-house.
The BATEMAN projects track record over the past five years in the PGM and base metals market includes
Rasimone Platinum concentrator, Potgietersrust Platinum concentrator, Impala Platinum
Limited-Refineries’ EPMR and platinum circuit, Hartley Platinum surface works, Western Platinum
base metal refinery, Stillwater plant extensions (PGM / nickel / copper), George Fisher (lead-zinc),
Kasese Cobalt, Empress Nickel, Sanyati Copper, Bulong Nickel, and Gunpowder/Mt Gordon Copper.
Besides the major projects during this period, BATEMAN has also been involved in about 20 feasibility
and project development studies. In addition to technical aspects, the work has often involved assisting
clients to source the finance required.
“The global approach to serving this market was boosted by the benefit which could be derived by
pooling our regional knowledge,” said Burks. “This will enable us to source the best consulting and
design services, laboratory facilities and equipment suppliers as well as to maximise regional familiarity
when transporting supplies and equipment to remote sites around the world.”
Platinum Group Metals PGM Process Engineering Home | Bateman Engineering NV | PGM Track Record | Project Management | Contact PGM
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