There is no standard lot size. However, some cities have similar lot sizes for houses. In Southern California, it's not uncommon for lots to be about 50' X 100', or about 5,000 square feet, in size. That's less than 1/8 acre, since an acre is something over 42,000 square feet. Some cities require that lots be of a certain size or higher before a second dwelling can be erected there, or restrict the square footage of the house on the lot to some proportion of the lot area.
Gold ores can be categorized under four broad heads: free milling ores, refractory ores, preg-robbing ores and complex ores. According to the different gold ore types, Zenith can design different models of gold ore crusher or gold crusher for different crushing process. Jaw crusher is usually used as primary gold crushing and impact crusher or gyratory crusher is applied widely as secondary crushing process.
Iron ore. Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, or deep purple to rusty red. The iron itself is usually found in the form of magnetite, hematite, goethite, limonite or siderite. Ores containing very high quantities of hematite or magnetite are known as natural ore or direct shipping ore, meaning they can be fed directly into iron-making blast furnaces. Iron ore