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Oklahoma City bombing — The Alfred P. Murrah Federal Building two days after the bombing Location … Wikipedia
Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations … Wikipedia
Derailment — For the use of the term in psychiatry, see derailment (thought disorder). Derailed Tatra T3 tram in Brno, Czech Republic … Wikipedia
Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… … Wikipedia
Ripsaw — (sometimes Rip saw, Rip Saw, RipSaw or The Duluth Rip Saw) was a Duluth, Minnesota newspaper published from 1917 to 1926 and again from 1999 to 2005. In its original incarnation, the paper was a scandal sheet with a reputation for muckraking,… … Wikipedia
Laser peening — is the process of hardening or peening metal using a powerful laser. Laser peening can impart a layer of residual compressive stress on a surface that is four times deeper than that attainable from conventional shot peening treatments. [cite web… … Wikipedia

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