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.
A: The light copper is a standard 5 mil, which is approximately 36 gauge. If you take a foot-long sheet of aluminum foil and fold it five times, you will have an idea of how thick a copper sheet is. A 3' by 4' sheet weighs 3 lbs.