{ "item_title" : "The Economic Definition of Ore", "item_author" : [" Kenneth F. Lane "], "item_description" : "Ken Lane's book The Economic Definition of Ore is a standard reference work within the mining industry. Elaborating on his theory originally developed in 1964, this book provides a thorough and comprehensive description of both the theory and practice of implementing cut-off grades within a mining operation.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/0/99/418/523/0994185235_b.jpg", "price_data" : { "retail_price" : "150.00", "online_price" : "150.00", "our_price" : "150.00", "club_price" : "150.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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