Greg, have you thought about adding an extra use to your Wolfram cells? Such as combining with carbon in Electroliser/Blast Furnace to form W2C (Tungsten Carbide) a compound often used for tools, cutting blades, etc.
Rather than using strait tungsten ingots in your current superconductor recepies perhaps W2C ingots could be used.
Could possible use tungsten as another catalyst in your industrial grinder. WS2
Could be used for a higher yield of the rarer metals, more so than mercury.
Edit: As im not really that well versed on uses and whatnot of WS2 (Never having done anything chemistry related past High School)
http://en.wikipedia.org/wiki/Tungsten(IV)_sulfide#Uses
Might act as a bit of inspiration.
I haven't really though about it much past that though