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1. 10" Mortar carriage

2. 10" Mortar carriage

3. 12" Mortar M1896 M3

4. Coehorn mortar

5. Side view 12" mortar 3 M1908

6. 1,000,000 lb. capacity horizontal tensile machine

7. 16" Barbette carriage, recoil pull back testing devise

8. 2,400,000 lbs. capacity tension-compression testing machine

9. 2,400,000-lb hydraulic tension-compression testing machine

10. 76 MM gun tube burst by hydraulic pressure

11. 76 MM gun tube prior to test

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

13. General view of physical testing laboratory

14. General view of physical testing laboratory

15. Guage testing equipment

16. Impact testing

17. Impact testing

18. Induction heating high temp, bldg 39

19. Machine for testing cylinders

20. Magnaflux test of 3" AA tube