Sulphuric Cell the only method to process these RF Connectors?

[AuggieDog]

I have about 15 pounds of these, mostly older 70s 80s and 90s. Just curious if there's a better method than using a sulphuric cell?

 

[nickvc]

If the product is all the same item which from your picture it seems to be then if you have access to cyanide that would be my process of choice.

 

[anachronism]

If the product is all the same item which from your picture it seems to be then if you have access to cyanide that would be my process of choice.

As Nick said. If you do not, look into the Iodine/Iodide leach. Components like this lend themselves to surface leaching rather than dissolving the 99.9% base metals to get at the roughly 1g per Kg they yield.