{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Effects of various longwall chain pillar configurations on gate road stability","author_name":"Jeffrey M. Listak","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HN/bigB003HNNBV2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HNNBV2.html\">Effects of various longwall chain pillar configurations on gate road stability</a>","width":400,"height":300}