{"product_id":"2940013471511","title":"Guide for the Construction of Driven-Rod Ground Beds","description":"This report describes a method for designing and constructing ground beds that has been developed under the sponsorship of the Bureau of Mines. The procedures for designing and constructing a driven-rod ground bed with a resistance of 5 ohms or less are given. Some of the theory of soil resistivity and fall-of-potential resistance measurements is included. Results of a bed constructed at the Bureau of Mines mine car roadway are presented.","brand":"1001 Property Solutions LLC","offers":[{"title":"Default Title","offer_id":47079500939504,"sku":"2940013471511","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940013471511_p0.jpg?v=1763592809","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940013471511","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}