. Public health and preventive medicine. Blackmails Ian. VENTILATION 323. GuibaTi air is directed along the mine galleries by means of double doors and partitions. (b) Heat.—In its simplestform heat is utilised by meansof an open tire or furnaceplaced at the foot of the upcastshaft, with the primary objectof producing rapid and efficientremoval, which is necessarilyfollowed by a suction action onthe air in the downcast a fiery mine the air usedfor furnace fuel combustionmust be derived directly fromthe outer atmosphere, to obviatethe danger of the mine air com-ing in contact with the
. Public health and preventive medicine. Blackmails Ian. VENTILATION 323. GuibaTi air is directed along the mine galleries by means of double doors and partitions. (b) Heat.—In its simplestform heat is utilised by meansof an open tire or furnaceplaced at the foot of the upcastshaft, with the primary objectof producing rapid and efficientremoval, which is necessarilyfollowed by a suction action onthe air in the downcast a fiery mine the air usedfor furnace fuel combustionmust be derived directly fromthe outer atmosphere, to obviatethe danger of the mine air com-ing in contact with the flame. (c) Steam jets.—They playinto vertical pipes, fitted to aframe on the top of the upcastshaft. (d) Pumps.—These are a combination of air and water pumps, with suchan arrangement of valves that the air is expelled from the pump when thewater is admitted, and admitted from the mine when the water is expelled. It is thus seen to be an ex-traction method. (e) Fans.—Various formsare used in mines, Guibalsfan being an excellent example(Fig. 109). It consists of
Size: 1507px × 1658px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectprevent, bookyear1902
