1) Chinese invention 2) Enterprise for Morton
Found on
https://www.crosswordclues.com/clue/salt-mining
A salt mine is a mine that extracts rock salt or halite from evaporite formations. == Mining regions == Areas known for their salt mines include: == History == Before the advent of the internal combustion engine and earth moving equipment, mining salt was one of the most expensive and dangerous of operations, due to rapid dehydration caused by con...
Found on
http://en.wikipedia.org/wiki/Salt_mining
No exact match found.
