How to Break Granite in SteamWorld Build: Surface, Not Mine

Updated 30 Oct 2026 Source The six block types and their breaking requirements (Dirt dug by any miner; Brittle Dirt collapsing when exposed; Sandstone glassy and needing Pickaxes from Pickaxe Makers; Granite rough and needing Drills from Carburizing Plants; Bedrock nigh-indestructible; Magma Blocks exploding when exposed and being the only way to break Bedrock; Enemy Soil collapsing and spawning enemies) and the three mine levels with their resource introductions (Dusty Caverns introducing Scrap and Ironium veins, Marshy Ruins introducing Fertile Soil, Gas and Crude Oil, Crackling Depths introducing Vectron Scrap and V. Scrap Vein) from steamworld.wiki.gg's The Mine page; the resource chain that Scrap makes Tools and Spare Parts and pickaxes for digging Sandstone, and that Ironium makes Sheet Metal and is an ingredient for Carbide Drills for digging Granite, from TheGamer's underground mines guide; the four soil types with their tool requirements, the carburising plant as the drill source, the beds-rock-requires-a-bypass note and the direct-dig-vs-vein distinction from the Steam Community game mechanics guide; the Ironium and Scrap requirement for Carbide Drills and the note that Gold and Rubies are one-time resources dug from dirt blocks from the LadiesGamers SteamWorld Build guide; the requirement to be able to dig Sandstone and Granite to reach storage chests from knoef.info's trophy guide. Sources agree on every link in the chain; none give a build cost for the Carburizing Plant, so no cost is stated. Verified 30 October 2026. By Antewise Editorial

Data status: The facts on this page were checked against the source named above. Game values can still shift with a patch, so re-check anything that looks off.

Every Miner digs the same four soils

The most common response to hitting a Granite wall is to build more Miner Quarters and wait. It never works. Miners are not the variable.

Your Miners can dig Dirt with their shovels, and that is where their ability ends. Everything harder than Dirt is gated by a tool, and every tool is manufactured on the surface.

That is the whole answer: when the mine stops, you go upstairs.

The soil ladder

Block	What it looks like	What it needs
Dirt	Simple block	Nothing. Any Miner digs it
Brittle Dirt	Fragile	Nothing — it collapses as soon as it is exposed, so treat it as a hazard, not a wall
Sandstone	Glassy block	Pickaxes, produced by Pickaxe Makers in your city
Granite	Rough stony block	Carbide Drills, produced by a Carburizing Plant in your city
Bedrock	Dark-toned, nigh-indestructible	Cannot be dug. Only a Magma Block explosion removes it
Enemy Soil	Distinctive	Collapses like sand and spawns an enemy
Magma Blocks	Volcanic	Explodes when exposed — and that is the only way to break Bedrock

The two that catch people out are at the ends of the list. Brittle Dirt is not a softer version of Dirt, it is a ceiling-collapse waiting to happen. And Magma Blocks are not an obstacle, they are a tool — the only tool that touches Bedrock.

The two chains you need

Sandstone → Pickaxes

Find a Scrap Vein in the Dusty Caverns and put an extractor on it, or assign Prospectors to it.
Scrap feeds Tools and Spare Parts production on the surface.
Pickaxe Makers turn that into Pickaxes.
Your Miners can now break Sandstone.

Granite → Carbide Drills

Find an Ironium Vein in the Dusty Caverns and put an extractor on it.
Ironium is refined into Sheet Metal.
Sheet Metal is an ingredient in Carbide Drills, which are produced by a Carburizing Plant.
Your Miners can now break Granite.

Note that both chains start with a vein, and both veins are on the first mine level. If you are stuck on Granite on a deeper floor, the thing you are missing was available to you before you ever went down there — you just spent the Ironium on something else.

The population you actually need

Both of those plants are milestone-locked, and the numbers are not small:

To break	Building	Milestone	Requirement
Sandstone	Pickaxe Maker	7	120 Engineers
Granite	Carburizing Plant	12	120 Aristobots

And the Aristobots are the real wall, because the ladder to them is: 200 Workers unlocks Engineers, 240 Engineers unlocks Aristobots, 240 Aristobots unlocks Scientists.

So hitting a Granite wall in the mine is not a mining failure at all — it is a town that has not reached 120 Aristobots yet. The fix is housing, services and roads, not Miners. See the milestones table for the full gate list.

Also note the direction of the loop: the mine gives you the ore, the city turns it into the tool, and the tool lets the mine go deeper. That is the entire progression of the game, and it is why a stalled dig is almost always a surface shortage.

What you are really digging for

It is worth knowing why to bother, because the Granite chain is expensive in Ironium.

Gold and Rubies are one-time resources, dug straight out of dirt blocks. They do not respawn and they are not veins.
Veins are what you build extractors on, and they produce forever. Scrap, Ironium, Gas, Crude Oil, Vectron Scrap.
Chests hold the things that uncap your storage and unlock machinery — and a good number of them sit behind Sandstone and Granite.

So the practical sequence for a stalled dig is: get Scrap going, get Ironium going, build both surface plants, then sweep the whole floor. Doing it in that order means you break the Granite once with the drills instead of digging around it four times.

The three levels, and what changes

Level	Introduces	Enemies?
Dusty Caverns	Scrap Vein, Ironium Vein	No — enemies do not appear here at all
Marshy Ruins	Fertile Soil, Gas, Crude Oil	Yes
Crackling Depths	Vectron Scrap, V. Scrap Vein	Yes, and worse

The Dusty Caverns being enemy-free is the reason to do your resource setup there rather than rushing down. You can run Scrap and Ironium extractors in complete safety while you build the surface plants, then arrive at the Marshy Ruins already able to break Granite.

Frequently asked questions

How do I break Granite in SteamWorld Build?

Build a Carburizing Plant on the surface. Granite needs Carbide Drills, Carbide Drills come from a Carburizing Plant, and the Carburizing Plant needs Ironium — which you get from an Ironium Vein in the Dusty Caverns, usually via an extractor. Hiring more Miners will not help, because every Miner digs the same four soils.

How do I break Sandstone in SteamWorld Build?

Build Pickaxe Makers on the surface. Sandstone needs Pickaxes, Pickaxes come from Pickaxe Makers, and those need Scrap, which you get from a Scrap Vein in the Dusty Caverns.

What are the block types in SteamWorld Build?

Six: Dirt, Brittle Dirt, Sandstone, Granite, Bedrock and Magma Blocks, plus Enemy Soil. Dirt is free. Brittle Dirt collapses as soon as it is exposed. Sandstone needs Pickaxes. Granite needs Drills. Bedrock cannot be broken directly at all. Magma Blocks explode when exposed and are the only thing that removes Bedrock. Enemy Soil collapses and spawns an enemy.

How do I break Bedrock in SteamWorld Build?

You do not break it — you blow it up. Bedrock is nigh-indestructible to digging, and the only way to remove it is to expose a Magma Block next to it and let that explode. If there is no Magma Block nearby, you route around the Bedrock instead.

Why can't I reach the storage chests in the mine?

Usually a Sandstone or Granite wall. Storage upgrades hide in large chests on every mine level, and plenty of them sit behind blocks your miners cannot break yet. Some sections also need enough Guards to open, and some need bridges across a gap. See the storage guide for the full sweep method.

What are the three mine levels in SteamWorld Build?

Dusty Caverns, Marshy Ruins and Crackling Depths. Dusty Caverns introduces Scrap and Ironium veins and has no enemies at all. Marshy Ruins introduces Fertile Soil, Gas and Crude Oil, and is where enemies start. Crackling Depths introduces Vectron Scrap.

More SteamWorld guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.