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.
railroad ties. The usual lengths are 8, 8Â½, or 9 feet, with a cross section between 6 inches Ã 7 inches and 7 inches Ã 9 inches. Ties treated with preservative, as all are today, can last an average of 25 to 40 years, although they may have a much shorter life due to mechanical wear. Interested in railroad ties?