Good news! I have been a dedicated Dublin gold ore miner for years and I have stuck by that dusty brown system through thick and thin, it still earns me a living.
I hear Copper ore is a shorter distance to haul but the Dublin to Detroit Ore run is still one of the fastest around, plus the pickings are still good in the fields, I get a decent amount each time I'm there and it takes me about 10 mins tops to fill my hagemon.
//I love the new mining system: no more tractoring, no more ore sitting about getting blown up. more diversity and it has been balanced nicely.