underground mining work
Exemple din articole cu underground mining work
- This process involves underground mining work that men operate with mechanical assisted lifts and hydraulic arms for drilling and setting in place explosives in the mind area.
- One of the most important salt mines in Transylvania, Turda Salt Mine has been known since ancient times, but it has been put into operation for underground mining work during the Roman period.
- Underground mining work was done by 13.
- One of probably the most critical salt mines in Transylvania, Turda Salt Mine has been recognized since ancient times, but was put into operation for underground mining work throughout the Roman period.
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