A cautionary note about fishing sinkers
Out here on the west coast every now and then you get a deal on two pound to five pound rock cod sinkers and most of the time they are great material to add to the pot.
These are used for deep water fishing out here so it's not uncommon got them to be dropped into 500 feet of water, most of the sinks are cast in a hurry and have voids in them and those voids are filled with water, at five hundred feet the pressure is about 4080 psi.
That water is trapped in those sinkers and if you drop a cold 3# sink into a half a pot of melted lead, well let's just say the Tinsel Fairy came to visit me once with one that had a water filled void. It was a KA-BLOOIE!!
What I ended up doing was to set all the used sinkers aside and stack them into an empty pot a few at a time and cook them a while at lower heat until all the hissing stopped, no more TF.:-D