The disparity between coal mining and other industries was greatest in North Dakota. Workers across all industries in that state had average salaries of $38,028 a year, while coal mining professionals, including engineers, earned an average salary of $88,567.(References 4). 2011 report by the Bureau of Labor of Statistics found that coal mining engineers in the U.S. have an average annual salary of $86,900. This amounts to an hourly average wage of $41.78.
The Most Beautiful Written Language in the World was Arabic, chosen by 18% of those who filled out this part of the survey (some chose a Spoken Language but neglected to choose a favorite Written Language).
A poll of non-English speakers by the British Council in 2004 found that oi was considered the 61st most beautiful word in the English language. A spokesman commented that Oi is not a word that I would've thought turned up in English manuals all that often. Oi was added to the list of acceptable words in US Scrabble in 2006.