30
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
3457999
312972
2

jan 13, 1971 - The estimated # of the United States production of osmium as a byproduct of copper refining was 2000 troy ounces (62 kg)

Added to timeline:

30 Oct 2019

Date:

jan 13, 1971
Now
~ 53 years ago