|
|
|
#4 |
|
Join Date: Aug 2004
Location: traveller
|
Eh, you'd have to ask David directly. I didn't have "precious metals" as a separate category on my list, which was derived independently but turned out pretty darn close to his.
Even so, note that "platinum group metals" also includes osmium, iridium, ruthenium, rhodium, and palladium, which have commercial uses (other than jewelry) and prices similar to platinum. |
|
|
|
| Tags |
| spaceships |
|
|