| Year | 1989 |
| Date | 01-Dec |
| Volume | 163 |
| Issue | 3,862 |
| Page | 706 |
| Category | Boiler |
| Part | 1 |
| Title | Time-Ex Steel Boiler |
| Author | S.S.Ibbotson |
| Notes | Observations and comments based on experience with steel boilers during construction and service. Steel versus copper, boiler plate thickness, examination internally |