Mine Collapse Under Scrutiny

ban retreat mining, follow the safety regulations, increase the number of escape routes. use the saftey netting to secure the roof of the work area as done in other hard rock mines.

joshua

The best approach is:

Good geological investigation to quantify engineering parameters such as in-situ stress, rock type and distribution, rock strength, hydrology, etc....

Good engineering design using best practices and safety factors

Mine to engineering specification

Continue to map geology and test rock and coal strength to make sure it conforms to predicted values

Update engineering models and design based on geology

Monitor closure and fracture developement. Some methods include on-site seismic monitoring and closure monitoring stations throughout the mine.

If bolts are used, check that these are installed properly.

Inspect working areas and faces regularly to look for signs of ground movement.

Remember that the mountain will kill you if you don't respect it!

Underground coal mining is a tough business and coal miners have a special kind of toughness, courage, and loyalty.

The lower level managers at the sites are expendable, you would need the corporate officers to be located in the mines.

Yes a minimum of 50% of the corporate brass in remote parts of the active mine would keep them from cutting corners. Or 10% of their families.

Better yet a finger or toe for each miner lost or maimed, over 20 they are used for backfill at the same mine.

I wish I may, I wish I might...

Brad