1. Ventilating The Face Area
Coal Mine Ventilation
Ventilating The Face Area

2. Purpose of Ventilation
Dilute, render harmless and carry off accumulations of dangerous gasses and dust from the mines.
Supply fresh or uncontaminated air to persons working in the mine.

3. The Ventilation Current
The Body of Air which is moved through a mine.
Intake and Return

4. Ventilating Pressure
Air, like any fluid body, will always move from a point of High Pressure to a point of Low Pressure.

5. Diagram of Main Fan at a Shaft
Automatic Doors
Explosion Door
or Weak Wall
Fan Impeller
15'
Overburden
Shaft
Mine Entry

8. DIRECTION OF AIRFLOW
INTAKE AIR

9. DIRECTION OF AIRFLOW
RETURN AIR

10. PERMANENT STOPPING

11. TEMPORARY STOPPING

12. CHECK CURTAIN

13. LINE CURTAIN

14. OVERCAST
Over
Return Air
Under
Intake Air

16. REGULATOR

20. C C C R R

21. Longwall Ventilation

22. R R R c c c
         
                   R
                                R R R R R R

23. Multi-Section Ventilation

24. c c c R R R R c R c c c c c

25. END