# Smelters - Stage 1 (technology)

internal name `smelters-mk01` · tier 1 (pY science pack 1, [tier 1](https://factorio.kalzumeus.com/tier/1.md))
HTML page: https://factorio.kalzumeus.com/tech/smelters-mk01/

## Cost

55 units of (1 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 2 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 45 s each.

## Requires (1)

- [Advanced material processing](https://factorio.kalzumeus.com/tech/advanced-material-processing.md)

## Leads to (1)

- [Antimony processing - Stage 1](https://factorio.kalzumeus.com/tech/antimony-mk01.md)

## Unlocks (1 recipes)

### Basic oxygen furnace MK 01 (`bof-mk01`)

- 2 s · tier 1
- Ingredients: 3 × [Boiler](https://factorio.kalzumeus.com/item/boiler.md), 1 × [Gas furnace](https://factorio.kalzumeus.com/item/steel-furnace.md), 15 × [Iron plate](https://factorio.kalzumeus.com/item/iron-plate.md), 10 × [Simple circuit board](https://factorio.kalzumeus.com/item/electronic-circuit.md), 10 × [Small parts](https://factorio.kalzumeus.com/item/small-parts-01.md)
- Results: 1 × [Basic oxygen furnace MK 01](https://factorio.kalzumeus.com/item/bof-mk01.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion,  (flying)
- Unlocked by: [Smelters - Stage 1](https://factorio.kalzumeus.com/tech/smelters-mk01.md)