Replies to post #8148 on Oidon Company, Ltd. (OIDN)

[AboveBlack]

http://www.historyinternational.com/global/listings/episode_detail.jsp?EAirId=17392447&page=list...

I missed most of the beginning. I pretty much watched how mining technology improved, but got more dangerous through the decades. It get up to 120 degrees in those deep mines. AC is used to drop the temperature down to the 90's. And they take a break every 30 minutes.