| Clue | Source | Date |
|---|---|---|
| Sudbury landmark, ___ Superstack | ||
| Mining acronym | Canadiana | 09 May 2022 |
| Nickel mining acronym | Canadiana | 13 Dec 2021 |
| Miner's acronym | Canadiana | 09 Aug 2021 |
| Sudbury mining Co | Canadiana | 14 Aug 2017 |
| Canadian nickel miner | Canadiana | 08 May 2017 |
| Cdn. mining giant | Canadiana | 10 Oct 2016 |