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Canary in a coal mine.
(UK) A canary in a coal mine is an early warning of danger.
Exact(1)
Economic activities include coal mining, lumbering, fishing, and summer tourism.
Similar(59)
Petroleum and natural-gas extraction in the north, coal mining, and lumbering, including paper production, are the basis of the rest of the economy.
However, as Japan's war effort picked up, the Japanese government sought to put more people on the ground in the sparsely-populated prefecture in order to ensure their control of the territory and fill the increasing demands of the coal mines and lumber yards.
The economy is dominated by fishing, lumbering, coal mining, and the extraction of oil and natural gas in the north.
See mining and coal mining.
See also mining and coal mining.
Coal mining carries inherent risks.
Coal mining is tough.
Coal mining has withered.
"This is not about ending coal mining.
The main industry is coal mining.
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CEO of Professional Science Editing for Scientists @ prosciediting.com