Head office
01 / Clients
We work where things simply have to work.
We work with the major mining operators and EPC contractors of northern Chile. Not one of these names is here for a single job: every one of them called us back.
BHP — Escondida
Albemarle
Fluor
AMSA — Centinela
Anglo American
BHP — Coloso
Gold Fields
Lundin — Caserones
From design to reality
One screen, three stages: design, simulation and fabrication.
Pick a screen and drag the handles to walk through the process — from the engineering render, to the FEA stress simulation, to the machine built in our shop.
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Years in operation
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Projects delivered
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Plants in Antofagasta
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Accidents last year
02 / What we do
Engineering that gets built — from point cloud to installed part.
We are not just a machine shop: we cover the full cycle under one roof and one point of accountability. We scan, model, validate, fabricate, line and repair.
Our scope. We design and deliver turnkey projects for large-scale mining: 3D surveying and reverse engineering, FEM/DEM modelling and validation, fabrication of structures, chutes, screens and large-diameter ducting, anti-abrasive linings and repair of critical components — with qualified welding, dimensional control and non-destructive testing as standard.
01
Engineering & Innovation
3D modelling, reverse engineering with laser scanning, FEM/DEM validation and detail drawings. We turn a scan into a drawing you can build from.
CAD · FEM · 3D 02Fabrication
Structures, chutes, screens, ducting and transport frames. Machining centre, laser cutting and robotic welding, with dimensional control and NDT. What comes in as plate leaves as equipment.
Machine shop · Laser · Robot 03Linings · RWL
Polyurethane, rubber, ceramic-backed rubber, polyurea, ceramic, HDPE and TIVAR, hot-vulcanised in autoclave. We add a layer that wears out before your equipment does.
PU · Rubber · Ceramic 04Repair
We recover critical components in the shop, with engineering behind every intervention: 994H buckets, pivot arms, screens, agitator shafts.
Diagnosis · Machining · DeliveryThe detail, no fine print
S.01 · Engineering & Innovation
We design and validate
- Turnkey project design
- 3D modelling and detail drawings
- FEM structural analysis
- Fluid dynamics and DEM analysis
- Reverse engineering with 3D laser scanner
- On-site validation with augmented reality
S.02 · Fabrication
We build in the shop
- Structures and platforms
- Chutes, boxes and hoppers
- Screens, sieves and dynamic equipment
- Large-diameter ducting and piping
- Transport frames and cradles
- Qualified welding + non-destructive testing
S.03 · Linings · RWL
We protect against abrasion
- Polyurethane
- Rubber and ceramic-backed rubber
- TIVAR
- Polyurea
- Internal application on components
- Wear and service-life engineering
S.04 · Repair & Field service
We recover and stay with you
- Repair of critical components
- Buckets, pivot arms and agitator shafts
- Machining and dimensional control
- Certification with load testing
- Full technical support on site
- Installation and commissioning
ISO 9001 · 14001 · 45001
Not on the list? Ask anyway: if it can be scanned, modelled, welded or lined, we do it.
Request a quote
03 / Installed capacity
28,000 m² of installed capacity, so we solve it in house.
Three owned facilities in Antofagasta: two production plants and the corporate building. With the heavy and precision machinery to fabricate, line and repair without depending on third parties.
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Installed capacity
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Facilities in Antofagasta
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Lifting capacity
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Vulcanising autoclaves
Heavy fabrication
CGK La Negra site
Av. Héctor Cobo 670 · Antofagasta
Offices
Corporate Building
La Chimba · AntofagastaThe machines that set us apart
M.01 · Machining
Machining centre
CNC vertical machining centre with micrometre precision, plus a line of lathes and milling for critical components, shafts and bushings made to drawing.
- VMC 855 vertical
- BT40 · 8,000 rpm
- 24-tool ATC
- CNC lathe ×2
M.02 · Cutting
CNC laser cutting
High-precision CNC laser cutting table for metal plate: clean edges, no burr and millimetre repeatability.
- CNC laser cutter
- Laser welding station
- Oxy-fuel profile cutter
M.03 · Robotics
Robotic welding
Two robotic arms for welding steel structures and pipework with a continuous bead and consistent quality.
- Robotic arm ×2
- Structures
- Pipework
M.04 · Forming
Heavy boilermaking
Forming and cutting of heavy-gauge plate for structures and ducting, with a 10-tonne overhead crane.
- 100 t CNC press brake
- Plate roll
- Guillotine shear
- 10 t overhead crane
04 / Linings · RWL
R.W. Liners: the anti-abrasive arm of CGK.
Ten years lining equipment for large-scale mining. We also line what we build: every component that moves abrasive solids leaves protected to last longer.
Autoclave · Ø3,500 × 8,000 mm
Hot vulcanising and cold pressing, for large equipment.
We master both lining processes: cold pressing and hot vulcanising in autoclave. Our two autoclaves — the larger one 3,500 mm in diameter by 8,000 mm long — let us line cyclone distributors, agglomerators, trommels and pulleys. A boiler, CNC vulcanising press and calender complete the line.
- Rubber
- Ceramic-backed rubber
- Polyurethane
- Polyurea
- Ceramic
- HDPE
- TIVAR
- Special steels
A.01
Screens
Lining of all types of screens for Chile's major mining companies.
A.02
Rollers · Larox filters
Contracts running for more than 5 years covering all kinds of rollers.
A.03
Filter plates
Repair of filter plates for press filters under contract.
A.04
Transfer chutes
Rubber and ceramic lining, with fixing plates fitted in the 3D model so they install without interferences.
A.05
Vertimill screws
Repair of Vertimill screws, covering the affected areas with pressed rubber.
A.06
Piping and pipework
In-house mitring, fabrication and tooling to line pipes and spools internally.
Advanced boilermaking at RWL. We don't only line: we also fabricate in special steels, stainless steel, bronze, titanium, aluminium and FRP. Heat exchangers, reactors, boilers, autoclaves, fans, pressure vessels and fabricated assemblies, with qualified welders and procedures, field engineering and ultrasonic thickness inspection.
05 / Projects
Components already out there working.
A recent selection. More than 10,700 projects delivered to BHP, Albemarle, Gold Fields, Anglo American, Caserones, Fluor and Centinela over more than a decade.
Upgrade 13K · Mining client · 2025
13K tank · from 3D model to site
Survey + 3D modelling + augmented reality · interactive slider View case
WO 11523 · Spence · In fabrication
Ø9 m Pressure-Break Tank
26 t · shell closed and welded · 85% complete See progress
Reservoir Tank · 2025
Reservoir tank + 60" duct
3D modelling + load test · 3-stage slider View case
Crusher · 2025
Electromagnet platform
Hydraulic cylinders + load test · 3-stage slider View case
Chute · 2025
Hydraulic pencil gates
Remote operation · FEM + DEM · 3-stage slider View case
Aqueduct · 2025
Aqueduct Project
Trimble 3D + augmented reality · 3-stage slider View case
CGK-4455 · BHP Coloso · 2021
Agitator shaft with polyurea
First-of-its-kind 3D modelling + dedicated transport frame View case
WO-10717 · Ducting · 2025
60" Manifold
Minera Escondida · Laser Tracker + robot View case
BHP Challenge · Escondida · 2023
Universal haul-truck tow device
280 t · 3D scan of the fleet + drone View case
CGK-4275 · Escondida · Laguna Seca · 2021
48" discharge piping
Mitred + cradles and frames · in service since 2021 View case
CGK-6059 · BHP · Anglo · Escondida
Screens — the full range
Vibrating, double-deck and sieves · bolted joints View case
+10 more cases
Buckets, sieves, filters, frames and more
See all projects
06 / Technology
The workshop starts at the computer.
Equipment, software and method. That is how we move fast without losing precision.
Trimble X7 · 3D laser scanner
The Trimble X7 captures the site. We turn it into drawings.
With our Trimble X7 laser scanner we survey entire plants in hours: millions of points at millimetre precision, even in difficult terrain. On top of that cloud we rebuild the 3D model, detect interferences and validate every fit before a single piece is fabricated.
- Point cloud on site
- Automatic on-site registration
- Millimetre precision
- 3D model + drawings
Trimble SiteVision · augmented reality
And before cutting any plate, we stand it up where it will go.
With Trimble SiteVision we take the IFC model to the field and overlay it at 1:1 scale on the real installation. That is where the things no drawing shows properly appear: the duct that hits a beam, the flange with no room to turn a wrench, the equipment that will not fit through the opening it was meant to come down. Fixing it in the model takes hours.
- IFC / BIM model on site
- Real 1:1 scale
- Interferences caught before fabrication
- Validation together with the client
3D scanning & point cloud
We capture components on site and rebuild parametric models checked against reality — no surprises in the shop.
See the point cloud in action →Structural analysis
FEM validation before fabrication. We take trial and error out of the places where failure is not an option.
Specialised linings
RWL line: polyurethane, rubber, ceramic-backed rubber, TIVAR and polyurea applied internally to extend the service life of abrasive-duty equipment.
07 / Social Commitment
Social value is in our DNA.
We don't only build components: we build a team, a community and a trade. Three pillars hold up the way we work in Antofagasta — and zero accidents back it up.
Miradas Compartidas Foundation
Under way · final in September
Our team is going to the final.
On Saturday 25 July the semi-final of the Miradas Compartidas Foundation tournament was played, an initiative that promotes inclusion through sport. CGK won 2 of the 3 matches that day and made it into the final.
- Foundation Miradas Compartidas improves the quality of life of people with disabilities through employment inclusion, recreational programmes and artistic and sporting experiences, aiming for real, decentralised social change.
- Tournament It started on 18 April 2026 and the final is played in September. CGK has taken part alongside the foundation since 2024.
- Companies Sacyr, Novandino, SQM, Smart Fit, Salfa and CGK, among other companies from the region.
5 José Lafuentetop scorer of the tournament, with five goals.
08 / New · CGK Services
The workshop that comes to your site.
We are taking the machine shop to the mine. These are modular units with a technical office and an equipped store that install inside your operation: diagnosis, cutting, repair and technical support on site, without waiting for the trip back to the workshop.
- Modular unit12-metre container — 6 m of technical office + 6 m of tool store, ready to be installed on site.
- Laser cuttingRobot and laser table of high precision: cutting innovation, now available as a service.
- On siteCGK crews solving it inside your operation, to the same standards as the workshop.
- SafetySafe people, safe work — everyone goes home. Zero tolerance for risk.
Would you like your operation to be one of the first with a CGK Services unit installed? Let's talk.
I want CGK Services at my site →
09 / Let's talk
Let's put you with the right person.
Pick the direct channel. Job applications, suppliers and clients each have their own route — that way your message reaches the right person sooner.
Join the team
Work with us
Join a regional company with more than a decade in large-scale mining. Send us your CV and tell us what you do best.
Send your CV to rrhh@cgksa.cl
Procurement
Supplier contact
Do you sell supplies, materials or services? Write to us to register as a supplier and quote.
Write to finanzas@cgksa.cl
Requirements
Client contact
Tell us what you need — scanning, engineering, fabrication, lining or repair — and we will come back with a technical scope within 48 hours.
Write to ventas@cgksa.clGot a component that had to be ready yesterday?
General contact for anything that doesn't fit the categories above. We reply with a technical scope within 48 hours.