Ecologically, where do they stand?

摘要

Where are the two major concerns at the time of writing in the metals sector - energy and raw materials. Both these are definitely not getting more abundant with the passage of time. Man needs to reuse as much as he can, and also extend the life of proven resources, bearing in mind, the energy crisis which is likely to repeat itself when oil and natural gas will become scarce and exorbitantly expensive yet again, Processes need to be made more efficient than what they are today. This brief article takes a look at the two vital aspects of the metals sector - the energy consumed per unit weight of metal produced and the percentage of metals which enter the process stream as recycled raw material, after the end of first use.