The Ventilation of Coal MinesD. Van Nostrand Company, 1882 - 95 Seiten |
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according air column air passing airways area and rubbing Brevet calculation circulate cloth co-efficient of friction collieries common pressure cube root cubic feet Degs diameter dimensions dip and rise Divisions effect of split feet of air feet per minute figures in column final velocity fire damp foot of rubbing formula gases give given Illustrated intake ksv² long split mines motive column multiplied NOSTRAND'S PUBLICATIONS obtained pass equal quantities Plympton pounds per square power required PRESCOTT pressure or power pressure required producing the ventilation proportion quantity of air quantity passing relative powers relative pressures required to pass result return air revised and enlarged rise split road 6 ft rubbing surface rule specific gravity splits subject splitting the air square foot Steam temperature tion total quantity typical road U. S. Navy underground unequal splitting University of Michigan upcast shafts ventilating pressure water gauge weight yards long ха
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Seite 98 - The THEORY of STRAINS in GIRDERS and similar Structures, with Observations on the application of Theory to Practice, and Tables of the Strength and other Properties of Materials.
Seite 97 - Report on the Filtration of River Waters for the supply of Cities, as practised in Europe, made to the Board of Water Commissioners of the City of St. Louis.
Seite 75 - Transactions of the North of England Institute of Mining Engineers, and accompany a short paper by Mr.
Seite 99 - SHIELDS, JE Notes on Engineering Construction. Embracing Discussions of the Principles involved, and Descriptions of the Material employed in Tunneling, Bridging, Canal and Road Building, etc. 12mo, cloth $1 . 50 SHOCK, WH Steam Boilers: their Design, Construction and Management.
Seite 99 - HOW TO BECOME A SUCCESSFUL ENGINEER: Being Hints to Youths intending to adopt the Profession. Third Edition. By BERNARD STUART, Engineer.