Depilliaring Area

The prop may buckle or break in the middle or at a weak point in its length.A prop in the working area on being tapped with a stick gives a dull and dummy sound.Lid over the prop may bend..If floor is shoft,the prop may penetrate it. There may be rumbling sound in the goaf.make gas in the face may increase.Dust may fall from the roof crack due to grinding of strata.An existing small crack in the roof may extend or widen.

Comments

Mining Engineering

First-aid station

Audio visual alarm

MINE WORKING