{"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 (1921)","author_name":"Albert B. Fall, H. Foster Bain","thumbnail_url":"https://www.ebooknetworking.net/books/143/702/big1437023940.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1437023940.html\">Operating Regulations: To Govern Coal-Mining Methods And The Safety And Welfare Of Miners On Leased Lands On The Public Domain (1921)</a>","width":400,"height":300}