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 are the wood structure that lie below the rails and serve as an anchor. The tracks are attached to the rails along any given line. Railroad ties have a standardized size, once mandated by Boston and Main (B&M) railroad, and now accepted as a common practice. The standard length of a tie is 102 inches.