1 Nirjharâs interest is to know different technology and process engineering. 2  Raw iron is found in earthâs crust, as an ore. 3  Iron ore mostly found as Fe 2 O 3 (the form of iron oxide found as the mineral hematite). 4  At present, blast furnace is most commonly used furnace to produce iron.
The weight of a railroad tie depends on their size and specifications. They can range anywhere from 100 to 300 pounds.
Standard Landscape Timber Sizes. An eight-by-eight full-sawn landscape timber -- 8 feet long -- is really 9 inches deep, 7 inches wide and 102 inches long, so it's close to standard railroad tie size. Landscape timbers come in a variety of sizes other than the original railroad tie size. Three-by-three landscape timbers are available, as are four-by-four and six-by-six. An 8-foot three-by-three landscape timber is 2 1/4 inches thick, 3 1/4 inches wide and 96 inches long.