I've been doing mining runs in 1000 needles lately. It's technically contested, but easy enough for alliance to avoid the horde npcs if you're on a PVE server. On weeknights I've been able to mine almost non-stop, averaging per-trip 80-100 copper ore, 60-80 tin ore, 10-20 iron ore, and up to 3 silver veins one trip, though usually just one. The copper veins also give a good amount of gems, I often come back with a couple of tigerseye which sell for a good amount at the alliance AH. I haven't seen any gold deposits despite their supposedly being the rare version of iron, but it may be that the level of the area determines the percentage of rare resource spawns, or that there simply wasn't enough iron for me to have seen a gold.
The place absolutely sucks on a weekend though. It took me twice as long on a Friday night as on a Tuesday night to fill my bags, because while the points will reappear before you finish a lap around the zone, they won't reappear fast enough if someone else is there mining as well.