{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Face ventilation in underground bituminous coal mines: performance characteristics of common jute line brattice","author_name":"Robert W. Dalzell","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3Z4/bigB003Z4JJ0U.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003Z4JJ0U.html\">Face ventilation in underground bituminous coal mines: performance characteristics of common jute line brattice</a>","width":400,"height":300}