Last seen in:
Related Clues:
- Standard product, once
- Penny : pound :: ___ : krone
- Seam sample
- It runs in veins
- Copper container, perhaps
- Vein pursuit?
- Lucky strike?
- It eases friction
- Squeak remover
- It's picked out of a mine
- Something to be assayed
- 45D homonym
- Mined rocks
- Zincite, e.g.
- "Buried" treasure found in 17-, 27-, 44- and 59-Across