| Year | 1988 |
| Date | 15-Apr |
| Volume | 160 |
| Issue | 3,823 |
| Page | 482 |
| Category | Correction |
| 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 |