00By the numbers

Four decades of one thing — building screens that screen gold.

Years operating 40+ From New Zealand workshop floors in the early 1980s to a manufacturing HQ in Rayong, Thailand.
Units shipped 100+ Every one designed, fabricated, and commissioned in our own facility.
Peak throughput 400t/hr From 30 t/hr field starters to 400 t/hr continuous-feed production plants.
Countries 6apac New Zealand, Australia, Papua New Guinea, Indonesia, Thailand, Laos.
01Manifesto

Not an agent.
Not a reseller. The workshop.

We design, build, and ship the machine. The same engineer who draws the screen specifies the steel, supervises the weld, and signs off the commissioning report. There are no layers between you and the people responsible for the plant arriving on your site.

That matters because alluvial gold mining is not a brochure business. It happens in river beds, jungle pits, and remote provinces where a missing bolt costs a week and a wrong specification costs a season. Our work is to take that risk off the operator's desk.

01 · 01

Direct from the workshop

No distributors, no agents. You speak to the engineer who will draw your screen.

01 · 02

Track-mounted by default

The only company in the world building self-propelled crawler trommels. Drive on, drive off.

01 · 03

Built around your tonnage

30, 60, 100, 200, 250, 300, 400 t/hr. Trommel diameter and motor sized to your feed.

01 · 04

Commissioned by us

We attend first start-up. We re-tune until the recovery numbers match the spec sheet.

GS250T track-mounted gold trommel in the workshop, side profile showing crawler tracks and orange screen body
A1  GS250T · Workshop, Rayong 2024
Trommel barrel detail showing apertured drum
Two engineers stood in front of a finished plant before shipping
A2 / A3  Drum · Pre-ship hand-off —
02The catalog

Three mobilities.
One screen behind them all.

Every plant is custom-built to the operator's feed and recovery target. The mobility class is decided by site: how far you have to move, how often, and what's between the river and the road.

GS250T crawler-mounted gold screening plant on tracks World exclusive
02 · 01  Track-mounted GS100T · GS200T · GS250T

Crawler-mounted trommels.

Self-propelled on excavator-class tracks. The operator drives directly to the dig face — no flatbed, no crane, no transport contractor in between. The only screens in the world built this way.

Capacity 100–250t/hr
Mobility 3 km/hon tracks
Power CAT C9diesel

For: remote alluvial sites · river-bed pits · jungle leases · operators who move dig faces weekly.

GS100 trailer-mounted gold trommel ready for road transport Workhorse
02 · 02  Trailer-mounted GS30 · GS60 · GS100 · GS200

Towable screening plants.

Highway-legal trailer frame with hydraulic stabilisers. Hook up to a prime mover, drive between sites in a day, level and feeding within the hour. The most flexible class we build.

Capacity 30–200t/hr
Mobility Towroad-legal
Setup ≤ 90minutes

For: small & mid contractors · seasonal claims · operators running multiple sites.

GS300 skid-mounted heavy-duty gold trommel Production
02 · 03  Skid-mounted GS300 · GS400

Production-scale plants.

Built around a heavy skid frame for continuous-feed sites. The largest trommels we build, sized for production miners who load by excavator and run shifts. Crane-onto-site once and stay.

Capacity 300–400t/hr
Drum 1.8 mdiameter
Sluice Integratedmulti-cell

For: established mine pits · large alluvial concessions · operators running ≥ 1,500 t per shift.

Open the full catalog →
03In the field

Six countries.
One Asia-Pacific spine.

From the Mahakam to the Manawatū. Our plants are commissioned across the gold belts of Asia-Pacific and Oceania — the same engineering team that signed the drawing watches the first start-up.

Laos Thailand · HQ Indonesia Papua NG Australia New Zealand
FIG. 03 · Operating zone, 2026
· NZ New Zealand South Island · 1983–
· AU Australia QLD & NSW · alluvial
· PG Papua New Guinea Highlands · river
· ID Indonesia Kalimantan · Sulawesi
· TH Thailand Manufacturing HQ · Rayong
· LA Laos Northern provinces

Recent commissions — a partial log.

Updated 2026 · 04
REF Model Country / Region Year Capacity Mobility
A·07 GS300 Indonesia · Kalimantan 2024 300 t/hr Skid
A·08 GS250T Papua New Guinea · Highlands 2024 250 t/hr Track
A·09 GS200T Indonesia · Sulawesi 2024 200 t/hr Track
A·10 GS100 Laos · Luang Prabang 2025 100 t/hr Trailer
A·11 GS60 Thailand · Loei 2025 60 t/hr Trailer
A·12 GS30 Australia · QLD 2025 30 t/hr Trailer

Operator names withheld at client request. Full reference list provided on enquiry.

A · Statement of practice
No one else builds a gold screen that drives itself to the dig.
And no one else takes the call from the operator at four in the morning when it doesn't.
Gold Screens NZ Engineering
Workshop charter, est. 1983 Brief the workshop →
04Start a build

Tell us about the site.

WhatsApp is the fastest way to reach engineering. Send the pit photo, the throughput target, and the approximate location. We will come back inside the day with a sized recommendation and an indicative price.

01 · Talk +60 18 942 6867 WhatsApp · primary
02 · Write info@goldscreensnz.com Email · for specs
03 · Visit Rayong Rayong, Thailand

Typical reply within the working day