| Year | 1987 |
| Date | 20-Nov |
| Volume | 159 |
| Issue | 3,813 |
| Page | 586 |
| Category | Boiler |
| Part | |
| Title | Collapsing Tubes |
| Author | Basil Markham |
| Notes | Researches the effects of externally pressurising copper tubes. Available published information, the test rig, test pieces, tests, testing with pressure and heat, tests by Maurice Steele, safety factors, avoiding trouble |