What are the challenges of working underground in the coal mining industry?

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Mechnique
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Hi All,
My name is Phil I am a retired degree mechanical engineer and have over 40 years experience in underground coal mining.
If you think it is "tough" in your job try working underground 400 metres vertical cover and 4 klm's in from the surface transport AND you have to move "Heaven and Earth" to get a welding/cutting permit. (Australia) It was and is a challenge. My interests at the moment are landspeed vehicles namely streamliners which are the pointy things that run at Bonneville and Our Lake Gairner in South Australia.
 
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Welcome to PF!

Mechnique said:
If you think it is "tough" in your job try working underground 400 metres vertical cover and 4 klm's in from the surface transport AND you have to move "Heaven and Earth" to get a welding/cutting permit.

Yikes! Glad the Earth decided not to teach you a once-in-a-lifetime lesson!
 
Hi, Thanks for the welcome , Earth has on several occasions and it is quite scary.