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.
The difference between a regular tie and an extra-long one is three to four inches. Regular-length ties are normally 58/59 inches, whereas extra-long ones are usually 61/62 inches long. As a rule of thumb, take your height in inches, and add your necksize in inches to it. If the number exceeds 91 inches you are better off with XL neckties.