Crossword puzzle clue "major miner concern"

Here are the possible solutions for major miner concern clue

Answer
Clue
Relevancy
ore
Clue
Major miner concern?
Miner concern
It's of miner concern
It's of miner concern?
Definition
rock containing a valuable metal, also OWRE
alcoa
Clue
Fortune 500 company that's a major miner
Company that's a major miner
cavein
Clue
Miner's major problem
methane
Clue
Coal miner's concern
Definition
a colourless odourless flammable gas, CH4, the simplest of the alkanes

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