The subject matter disclosed herein relates to a method (100) for strata monitoring and indicating roof movements during mining of coal using an Auto Warning Tell Tale (AWTT). The method includes installing (101) Auto Warning Tell Tale (AWTT) at all junction points in roof portion of a coal mine prior to initiation ...

The subject matter disclosed herein relates to a non-split mining method for extraction of coal pillars by continuous miner, comprising of determining (101) the size of a pillar (201) in underground coal bed, sequencing (102) of pillars, and cutting (103) a pillar into a series of slices directed into level gallery ...

Described herein is an instrument for real time monitoring during coal mining. The instrument is placed at a junction where the top portion, an anchor (101) of the instrument is pushed into the roof area of the junction and the bottom portion, a rectangular base flange (107) rests or placed on the floor area of the ...