NO DOUBT: Heroes guild w.2 at rune rocks (86 mining owns). If I make yew longs and buy nats, I actually EARN cash if I mine the rune rocks to. Supplies for 1k yew longs: About 800k Alch reward for 1k yew longs: 768k Thats 32k less cash. For 2k yew longs, thats 64k cash. I alched 1,2k yew longs down there and got 16 runite ores. Those are worth 176k.