{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Steam shovel mining, including a consideration of electric shovels and other power excavators in open-pit mining","author_name":"Robert Marsh","thumbnail_url":"https://www.ebooknetworking.net/books/114/955/big1149558946.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1149558946.html\">Steam shovel mining, including a consideration of electric shovels and other power excavators in open-pit mining</a>","width":400,"height":300}