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 2X6 is 5 1/2 inches wide. Incidentally it's 1 1/2 inches thick. Pre-WWII lumber was cut at stated dimensions, a 2x4 was actually 2 inches by 4 inches. 2X6 (dry Douglas fir) weighs 2lbs per foot. Thus a 20ft 2X6 would weigh 40 lbs. Other types of lumber such as pine weighs more and all lumber is heaver when wet or if it has â¦ been treated.