E
SECTION E — FIXED CONSTRUCTIONS
  
EARTH OR ROCK DRILLING; MINING
 E21
EARTH OR ROCK DRILLING; MINING
 E21

Note(s)

In this class, the following term is used with the meaning indicated:

  • "drilling" covers boring and vice versa.

 E21F
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS  [2]
 E21F
Subclass index
VENTILATION 1/00, 3/00
DRAINAGE 16/00
SAFETY DEVICES, RESCUE DEVICES 5/00 - 11/00
TRANSPORT; FILLING-UP 13/00; 15/00
OTHER METHODS OR DEVICES 17/00
 E21F 1/00 - 
E21F 3/00
Ventilation of mines or tunnels
P:50 E21F 1/00
Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F)  [2]
P:30 E21F 3/00
Cooling or drying of air (air-conditioning rooms or spaces in general F24F)
 E21F 5/00 - 
E21F 13/00
Safety devices; Rescue devices
P:10 E21F 5/00
Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (dams E21F 17/00; applying liquids or other fluent materials to surfaces in general B05; flue-gas indicators G01N)  [6]
P:40 E21F 7/00
Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose
P:0 E21F 9/00
Devices preventing sparking of machines or apparatus (preventing sparking of electric machines or apparatus H01K, H02K)
P:20 E21F 11/00
Rescue devices or other safety devices, e.g. safety chambers, escape ways (breathing aids for curative purposes A61H 31/00; respiratory apparatus A62B 7/00; revival apparatus A62B 33/00)
P:60 E21F 13/00
Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading B65G)
P:70 E21F 15/00
Methods or devices for placing filling-up materials in underground workings (dams E21F 17/00)  [6]
P:80 E21F 16/00
Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00)  [2]
P:90 E21F 17/00
Methods or devices for use in mines or tunnels, not covered elsewhere (mine lighting F21, H05B)  [2]