Рударство — разлика између измена

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(Спашавам 1 извора и означавам 0 мртвим. #IABot (v2.0beta9))
*John Milne: The Miner's Handbook: A Handy Reference on the subjects of Mineral Deposits(1894) Mining operations in the 19th century.[https://books.google.com/books?id=ty0LAQAAIAAJ&pg=PA95&lpg=PA95&dq=waterways+john+milne&source=bl&ots=jDX1QlJE1A&sig=p7zYWfP1L7Z81bN2QKJeX_H-6MQ&hl=en&ei=vpeqTOOWNcKC8gb5pJirCA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBYQ6AEwAA#v=onepage&q&f=false]
*Aryee, B., Ntibery, B., Atorkui, E. (2003) ''Trends in the small-scale mining of precious minerals in Ghana: a perspective on its environmental impact'' (in Journal of Cleaner Production 11: 131-140)
*The Oil, gas and Mining Sustainable Community Development Fund (2009) ''Social Mine Closure Strategy, Mali''(in [https://web.archive.org/web/20111007165012/http://commdev.org/section/projects/sadiola])