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Thus , by reducing wages , inefficient men would produce poor results ; excessive economy in repair parts might cause costly delays ; cutting down supply of compressed air would result in feeble drilling ; reducing quantity of explosive ...
( D ) Mining and Engineering World " Cost of Mining . " . J. R. Finlay . McGraw - Hill Book Co Gold Mining and Milling in Western Australia . " A. G. Charleton . E. and F. N. Spon Mining Costs of the World , E. N. Skinner and H. R. ...
In Table 18 costs and weights are given for a standard line having the good starting characteristics obtained by a definite wound secondary . Squirrel - cage motors are slightly less expensive . Singlephase motors cost 30 % more for ...
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LibraryThing ReviewUlasan Pengguna - wackyvorlon - LibraryThing
I only have the second volume of this work, and I love it! Found at a local Value Village, it is filled with fascinating information. Details of all aspects of mine engineering, including compressed air, ventilation, and supporting structures. Baca ulasan lengkap
Conditions Methods in General
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