⚠️ Eco v0.14 is coming — the next major update reworks upgrade modules, so some of these numbers will change. They reflect the current version. What’s changing →

Simpler tiers: the 1–4 tiered upgrades become a single Basic / Advanced / Modern upgrade each.
Permanent upgrades: a module placed in a workstation is permanent — no more swapping lower tiers out as you progress.
Power transitions: a module can change a station’s power type/draw (e.g. a Modern upgrade moves a sawmill from mechanical to electrical power).
Talent-integrated: modules now use the same bonus/talent system — any talent benefit (power, labor cost, recipe unlocks) can come from a module.
Cheaper to upgrade: with the multi-tier parts gone, fully upgrading a workstation costs significantly less.

We’ll update this calculator shortly after the update releases.

Home › Items › Crushed Slag

Crushed Slag

Slag that has been crushed into a fine gravel.

Weight24000 gMax stack10Carried on backSkillMining Lv 1StationStamp Mill

Notes

Crushed Slag is a processed byproduct of smelting, crushed into fine gravel for use as a construction ingredient. It appears in recipes for asphalt, reinforced concrete, fiber-reinforced concrete, bloomery, garden ponds, and stone roads, making it a valuable industrial material rather than waste. Because it is produced only at higher crushing levels (Lv2 and Lv3), processing slag into crushed slag reduces environmental pollution from tailings while providing a useful resource for building and infrastructure projects.

Notes are AI-generated and may be imprecise.

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Recipe (2 ways to make this)

▶ Open the full recipe page

Upgrade modules

Mining Advanced Upgrade (−25% cost)

Mining level 0Skill level changes labor only.

Quantity to craftScales ingredients, labor, time, output & total raw by the number of crafts.

Ingredients

Ingredient	Qty	Type
Slag	20	item

Crafting

Labor	120 calories
Craft time	2 min
Throughput	≈ 150 Crushed Slag / hour (base)

As a block

SolidDiggableWall

Total raw to craft this

Steps11Total labor7807.5 calTotal time105.9 min

200× Limestone
140× Wood (any)
75× Iron Ore
75× Quicklime
32.5× Clay
20× Steel Bar
7.5× Silica (any)

Approximate — category ingredients and any production cycles are counted as raw.

Categories

Obtained from

Jaw Crusher

Crushed Slag Lv3

Stamp Mill

Crushed Slag Lv2

Used in

Cement Kiln

Farmers Table

Garden Pond

Kiln

Bloomery

Wainwright Table

See also

Crushed Granite

Crushed Limestone

Crushed Mixed Rock

Crushed Sandstone