{"product_id":"9780994185235","title":"The Economic Definition of Ore: Cut-off Grades in Theory and Practice","description":"\u003cp\u003eKen 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.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"COMET Strategy Pty Ltd","offers":[{"title":"Default Title","offer_id":49878990487792,"sku":"9780994185235","price":150.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780994185235","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}