A Text-book of Coal-mining: For the Use of Colliery Managers and OthersCharles Griffin & Company, 1904 - 563 Seiten |
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Seite xii
... Arrangement Hathorn - Davey Arrangement Compressed Air Direct - acting Steam Pumps Worthington Pumps Evans Duplex 395 Dams 397 Bibliography . • 398 Importance Quantity of Air Gases met with in Mines Carbonic xii CONTENTS .
... Arrangement Hathorn - Davey Arrangement Compressed Air Direct - acting Steam Pumps Worthington Pumps Evans Duplex 395 Dams 397 Bibliography . • 398 Importance Quantity of Air Gases met with in Mines Carbonic xii CONTENTS .
Seite xiii
... Quantity of Air Gases met with in Mines Carbonic Acid Carbonic Oxide Sulphuretted Hydrogen Light Carburetted Hydrogen After - damp . Coal - dust Action of Moisture Laws of Friction Production of Air Currents Natural Ventilation Furnace ...
... Quantity of Air Gases met with in Mines Carbonic Acid Carbonic Oxide Sulphuretted Hydrogen Light Carburetted Hydrogen After - damp . Coal - dust Action of Moisture Laws of Friction Production of Air Currents Natural Ventilation Furnace ...
Seite 5
... quantity of carbon increases . The conversion of woody tissue into coal takes place by the elimination of oxygen , which com- bines with carbon to form carbonic acid gas and by the separation of carburetted hydrogen ( " fire damp " of ...
... quantity of carbon increases . The conversion of woody tissue into coal takes place by the elimination of oxygen , which com- bines with carbon to form carbonic acid gas and by the separation of carburetted hydrogen ( " fire damp " of ...
Seite 9
... quantity of water . A weighed invariable quantity of the coal to be experimented with is intimately mixed in a mortar with about ten times its weight of a mixture of three parts potassic chlorate and one of potassic nitrate . This ...
... quantity of water . A weighed invariable quantity of the coal to be experimented with is intimately mixed in a mortar with about ten times its weight of a mixture of three parts potassic chlorate and one of potassic nitrate . This ...
Seite 8
... quantity of coal in a porcelain crucible , either over a Buusen gas - burner , or in a muffle . It is important that not only the quantity of ash should be determined , but also its nature . Some ashes tend to fuse together and form ...
... quantity of coal in a porcelain crucible , either over a Buusen gas - burner , or in a muffle . It is important that not only the quantity of ash should be determined , but also its nature . Some ashes tend to fuse together and form ...
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alternating current amount angle Anthracite apparatus arrangement attached bars bolts boring bottom brake cage carbon carbonic acid carried cent centre chain coal coal-dust coils Colliery compressed connected consists cost cylinder depth distance drill driven drum employed engine explosion feet fire-damp fixed flange friction gear groove haulage hole inclined Inst iron lamp latter length lever lifted load longwall lower Lye Cross machine method mines motor obtained ordinary passes pieces pillars pipes piston placed plate plunger position pressure prevent props pulley pump quantity rails revolutions per minute roads rods roof rope round safety lamp screen screw seams Série shaft shown in Fig side sliding South Wales speed stall steam steel stroke surface timber tippler tool tube valve velocity ventilation vertical water gauge weight wheel winding winding engine wire yards