{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Design of Mine Structures","author_name":"Milo Smith Ketchum","thumbnail_url":"https://www.ebooknetworking.net/books/114/250/big1142504867.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1142504867.html\">The Design of Mine Structures</a>","width":400,"height":300}