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Hardening composite plates for bank vaults by immersion in the Hudson River. hardening to make burglar-proof vaults.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Monday 16 November 2009
- Posted on
- Monday 16 November 2009
- Tags
- construction, invulnerability, iron, protection, robbery, steel, strength, theft
- Visits
- 1548