Early Access · out now · $19.99 · Steam · Windows + macOS
Groundwork Simulator
English

Groundwork Simulator gold washing

Dirt is only worth what the plant can recover from it. The washing chain is where a good dig turns into gold — and where a bad setup quietly loses it.

Last verified 2026-10-23Game version Early Access launch build

Quick answer

Run dug material through the wash plant, let the sluice boxes separate the heavy concentrate, then process that concentrate on the shaking table with water supplied by pumps and hoses.

Dirt is not gold, and the gap between them is the wash plant. Groundwork Simulator's own description lays the chain out in order: excavate promising material, wash it through the sluice boxes, then process the concentrate on the shaking table. Four pieces of equipment, one continuous flow, and a water supply that has to reach all of it.

Official Steam store screenshot: the wash plant with its conveyor running

The chain, in order

StageEquipmentWhat it doesWhat breaks it
FeedExcavator and loaderPuts dug material into the plantFeeding unbroken ground or feeding unevenly
Transport inside the plantConveyorCarries material into the washing stageA starved belt — the plant runs empty
SeparationSluice boxesWater carries material over the boxes and the heavy concentrate stays behindNot enough water, or too much flow
FinishShaking tableProcesses the concentrate into recoverable goldConcentrate dumped on the table faster than it can process
SupplyPumps and hosesDelivers water where it is neededA plant plumbed once and never extended

That table is the whole page in miniature. The rest is what each stage wants from you.

Water is the constraint, not the dirt

The developer's water system is a routing problem: bring water to the washing operation with pumps and hoses, position the equipment, route the connections across the site, and get water flowing where it is needed. As the site grows, adapt the setup to keep the plant supplied.

Two practical consequences. First, water infrastructure should be built before the stockpile, not after — the more material you have waiting, the more tempting it is to run the plant dry. Second, plan the hose run along the same corridor as the haul route you are already maintaining; two pieces of infrastructure in one corridor are easier to extend than two crossing ones.

If you cannot get a connection to release, this is the one control players answered for each other on launch day: right-click the pipe at the pump to disconnect it.

Feeding the plant properly

The plant has a throughput, and the loop around it has to match. Three rules that hold regardless of what equipment you have:

  1. Break before you feed. Sluice boxes want material that has already been broken up, not chunks straight off the face.
  2. Keep the feed steady. A plant that runs empty then floods processes worse than one fed at a constant rate; the pause is what makes the numbers feel random.
  3. Never stockpile between the cut and the plant without a reason. Every stockpile is a second handling step, and the loader lap you add is time the plant spends idle.

Building the plant on site

Position matters more than people expect. Put the plant on flat ground near the water source you can actually reach, close enough to the cut that the loader lap stays short, and leave yourself room to extend — the roadmap's Update 2 adds new wash plants and expanded processing equipment along with more in-depth wash-plant controls, so a layout that cannot grow is a layout you will rebuild.

The other positioning constraint is the trailer. Equipment arrives by truck and trailer, so the plant needs an approach that a loaded trailer can actually take. A plant on a bench with a tight turn into it is a plant you will fight every time you move it.

Troubleshooting the washing chain

What you seeMost likely causeFix
Plant running but nothing recoveringFeed is too coarse, or water is not reaching the sluicesBreak material finer; check the hose run end to end
Gold shows up late and thinConcentrate is being processed too fast for the tableSlow the feed, let the table work the concentrate
Plant keeps stallingWater supply not keeping up as the site grewAdd or re-route pumps, shorten the hose path
Everything works but the day disappearsHaul lap too long relative to plant throughputMove the plant, or shorten the route

Where washing sits in the loop

Washing is the middle of the operation, but it is also the part that decides whether the digging was worth it. A site that digs fast and washes badly produces a big pile and a small return; a site that digs at the plant's pace produces steady gold. If you are still choosing between spending time on the cut and spending time on the plant, spend it on the plant first — the beginner guide makes the same argument from the first hour.

Once the plant is reliable, the next constraint is usually the ground you are driving on. Terrain, slopes and haul routes covers that, and money and progression covers what to do with the gold once it is out.