{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"An evaluation of leaky feeder communication in underground mines: Final report ([Open-file report] / United States Department of the Interior, Bureau of Mines)","author_name":"Dana T Updyke","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0006XRPVI.html\">An evaluation of leaky feeder communication in underground mines: Final report ([Open-file report] / United States Department of the Interior, Bureau of Mines)</a>","width":400,"height":300}