{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Placer mining in the western United States: part 1. general information, hand-shoveling, and ground-sluicing","author_name":"E. D. Gardner","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3YR/bigB003YRIN5A.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003YRIN5A.html\">Placer mining in the western United States: part 1. general information, hand-shoveling, and ground-sluicing</a>","width":400,"height":300}