Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 11, 2025
Again, in the development of a mine after it is located and proved in part, there is more unavoidable economic waste. The rock is blank and silent. It can only be explored by means of expensive drifts and drillings. In one mine at Bisbee, Arizona, a shaft was sunk which had drifts at the 600-and 900-feet levels, all without result.
Word Of The Day
Others Looking