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1. Failure of 10 inch wire wound cannon

2. Failure of 10 inch wire wound cannon, top

3. Close up of fatigue test set up

4. Experimental stress analysis of corrugated missile sheet

5. Hydrostatic test, luminous shock tub showing fracture & strain gage wiring

6. Overall view of fatigue crack propagation test

7. Photocopy of failure, experimental 10 inch wire wound cannon circa 1875, bottom

8. Photocopy of failure, experimental 10 inch wire wound cannon circa 1875, top

9. 1,000,000 lb. capacity horizontal tensile machine

10. 16" Barbette carriage, recoil pull back testing devise

11. 2,400,000 lbs. capacity tension-compression testing machine

12. 2,400,000-lb hydraulic tension-compression testing machine

13. 76 MM gun tube burst by hydraulic pressure

14. 76 MM gun tube prior to test

15. Amsler 50,000, universal testing machine with autographic recorder

16. Dr. Ernest Abrahamson conducting transmission electron microscopy

17. General view of physical testing laboratory

18. General view of physical testing laboratory

19. Guage testing equipment

20. Impact testing