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“Turkey is the canary in the coal mine,” Tim Lee said on Friday “We are going have another crash that will be worse than 2008 in certain ways” After working as an economist for the British mutual fund company GT Management, Lee started his own business in 2003 and writes the newsletter called piEconomics followed by a small cluster of .
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The hazard of fire damp or methane accumulation in mines was well known by the time electricity was introduced, along with the danger of suspended coal dust At least two British mine explosions were attributed to an electric bell signal system
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Coal mining is the process of extracting coal from the ground Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production
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Mining was extremely dangerous Without government regulation or labor rights, miners worked 16-hour days An estimated 95,000 miners died in the nation’s coal mines from 1900 to 1950, according to Mine Safety and Health Administration records
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during disasters as cable breakage interrupts communications A particular requirement for electronic communications systems in underground coal mines is that they need to be designed , phenomena associated with radio signal propagation in coal minThis research was done in response to the Coal Mine Health and
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