Zinc plays..., page-41

Just remember the SMM have their own inventories and many companies hold stock for hedging, etc. This especially holds true for copper and in some regards zinc. It was reported that there were about a million tonnes of zinc still in play above and beyond the LME holdings.

Using those changes above (and yes, I know it's not a linear trend but...):
Copper: 232,700/2700 = 86 days left.
Tin: 5200/180 = 28 days left!
Lead: 185,100/975 = 189 days left.
Zinc: 465,950/2150 = 216 days left.
Aluminium: 2,778,825/6150 = 451 days left.
Nickel: 442,182/1404 = 314 days.

As you can see, tin, copper and lead would run out faster, if it all maintained its trend. Last year, around October, the trend reversed as companies like Glencore dumped stock to keep its head above water... I don't think it's going to happen this time but the game can change fast so do your own research. To me, that bankruptcy is a sign of the bottom, although I can see another slight pullback before it goes for sure.

Good luck.