{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Basic estimated capital investment and operating costs for underground bituminous coal mines: Mines with annual production of 1.03 to 3.09 million tons ... : revision of Information circular 8641","author_name":"Sidney Katell","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HK/bigB003HKR904.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HKR904.html\">Basic estimated capital investment and operating costs for underground bituminous coal mines: Mines with annual production of 1.03 to 3.09 million tons ... : revision of Information circular 8641</a>","width":400,"height":300}