Related Clues:
- Waste from coal-mining
- Glassy byproduct
- Byproduct of smelting
- Fire starters, perhaps
- Foundry detritus
- Firecracker flashes
- Foundry by-product
- Smeltery junk
- Ogwumike sisters' WNBA team
- Electricians (informal)
- Electrician put on board
- Bronze Age jewelry material
- Glasslike stuff in concrete
- Cinderlike lava
- Stony waste matter (in a heap?)