What dangers were in the coal mines?

some people might not know this because there is a difference between coal mining and gold searching coal mining includes dust and tnt explosures which can kill

many people. One is vovuce gas. it is like methane gas but it is very fat, and

a silent killer. for gold searching It is very dark for mining and gold is very rare.

the killing of gold mining is Jerasic gas. it is very explosive!