{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Design and operation of four prototype fire detection systems in noncoal underground mines","author_name":"William H. Pomroy","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HI/bigB003HIXOWS.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HIXOWS.html\">Design and operation of four prototype fire detection systems in noncoal underground mines</a>","width":400,"height":300}