According to Mortality Rates in Appalachian Coal Mining Counties: 24 Years Behind the Nation, by Michael Hendryx, of the Department of Community Medicine, West Virginia University, Morgantown, WV <pdf>, mortality is 10.21 % higher in Appalachia than elsewhere in the US, and 18.45 % higher in in coal mining counties where 4 million tons or [...]
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The same messages can be communicated by signalling the letter "K" in Morse code via signal lamp. (While a proper signal lamp may be ideal, a flashlight, probably best employing red LEDs, will certainly fit the bill).
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