{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Operating Regulations to Govern Coal-Mining Methods and the Safety and Welfare of Miners on Leased Lands on the Public Domain Under the Act of February 25 1920 (Public No 146)","author_name":"Author Unknown","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2JT/bigB002JTXBSS.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002JTXBSS.html\">Operating Regulations to Govern Coal-Mining Methods and the Safety and Welfare of Miners on Leased Lands on the Public Domain Under the Act of February 25 1920 (Public No 146)</a>","width":400,"height":300}