DECIMAL CLASSIFICATION 
658.26 Power 
261 Power generation 
See also 621.19 Power plants, steam engineering; 621.31 Electric power pro. 
duction; 621.312 Electric power plants 
Power transmission 
See also 621.8 Power transmission, mekanical engineering; 621.319 Trans. 
mission of electric energy 
Belting 
Production equipment 
Servis equipment Laborsaving devices Safety 
equipment 
Transport Conveyer sistems Handling materials 
Trucks 
For conveying and hoisting machinery see 621.86 
Hand conveyers and hoists 
Power “ “ ¢ 
Gravity “ “ ® 
Sales equipment 
Safety devices and equipment 
Better clast in 674.8 Protection of human life 
Fire protection and equipment 
Better clast in 614.84 Protection of human life 
Water pails 
Hose 
Automatic 
Chemic extinguishers 
Other 
Industrial economics Personnel 
This group provides for the economic aspects. The divisions ar the same as under 
331 and only the principal ones ar given here; where desired (e.g. by those who 
wish to keep together all material relating to business management) these divi- 
sions may be subdivided, as in table for 331, by adding to 658.3 the figures 
following the decimal point in 3371; e.g. Arbitration, under Economics, 331.155! 
under Industrial economics, 658.3155. In general libraries these topics ar 
better clast in 331 
Relations of capital to labor 
Remuneration for work 
Labor of children 
“ women 
Work under certain unfavorable conditions 
Pauper labor Cheap foren labor 
Different classes of workers Skild and unskild labor 
Laboring classes 
Dther questions 
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31 
32 
33 
34 
35 
36 
37 
.38 
39 
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