Popular Mechanics

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Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
 

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Indice

Comet on rails
9
Union Pacific RR., Railroads (Train speed)
British victor in air classic
15
Airplanes (Design)
Fighting mobs and crime with tear gas
17
Tear gas
Lure of puzzle inventing
20
Inventions, Puzzles
President on the air
28
Franklin Delano Roosevelt; 1882-1945, Radio broadcasting
Dam building, waste or progress?
34
Dams, Hydroelectric power

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