| Year | 2007 |
| Month | June |
| Volume | 28 |
| Issue | 12 |
| Page | 408 |
| Author | Hayes |
| Subject | Museum |
| Key Word | Cornish Valves Hormblower Haigh Foundry Wigan Musgrave Bolton Bickershaw Walker Bros Wigan Snibston Colliery South Crofty |
| Article Title | Gold Silver and Black Diamonds |