Greetings all, I worked the winter part time in CC at a friends 600 acre gold mine and have a fair amount of cons that I want to smelt rather than run through the aqua regia. All underground except crusher line. Anyhow there is 2 mills, two 12 foot shakers, a 3rd mill and 2 flotation troughs. the ore running was around 1 to 3 opt, the table cons were around 15 OPT and I don't know about the float cons, anyhow I have researched the flux's I have a fair idea of how to proceed and make my own after a few loads and cupil, watch the matte and fine tune with other flux's. I don't think I should use the recipe they use in their assay lab. I believe I should roast all of this stuff, the mine sends there's off in super bags to Nevada, but I know this is full of metal with gangue minerals like galena, arsenopyrite, breccia and tellurium, didn't see all the reports, mostly using the XRF. I guess I am asking for any advice, I am new to smelting and waiting on my furnace, slag mold, a few chemicals, and silica sand. I am not sure about the nail in the charge if I am roasting, or using latharge as a collector. And if the lead (II) oxide PbO is even ok to use. I am not a chemist, but I read Hokes and spend a lot of time researching them and processes, U tube, and others, but I want to do things right and safely so if I sound green don't yell at me...HA! I will appreciate any support. Thanks.